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190979039 = 4315728289
BaseRepresentation
bin10110110001000…
…01101111011111
3111022100201222202
423120201233133
5342342312124
630541202115
74506203126
oct1330415737
9438321882
10190979039
1198891419
1253b6033b
1330749264
141b514abd
1511b765ae
hexb621bdf

190979039 has 8 divisors (see below), whose sum is σ = 196672080. Its totient is φ = 185342976.

The previous prime is 190979027. The next prime is 190979069. The reversal of 190979039 is 930979091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-190979039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190978984 and 190979002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190979069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7394 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (24584010).

Almost surely, 2190979039 is an apocalyptic number.

190979039 is a deficient number, since it is larger than the sum of its proper divisors (5693041).

190979039 is a wasteful number, since it uses less digits than its factorization.

190979039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28489.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 190979039 is about 13819.5165979133. The cubic root of 190979039 is about 575.8754543204.

The spelling of 190979039 in words is "one hundred ninety million, nine hundred seventy-nine thousand, thirty-nine".

Divisors: 1 43 157 6751 28289 1216427 4441373 190979039