194292139 has 8 divisors (see below), whose sum is σ = 197618400. Its totient is φ = 190982400.

The previous prime is 194292107. The next prime is 194292187. The reversal of 194292139 is 931292491.

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

It is a cyclic number.

It is not a de Polignac number, because 194292139 - 2⁵ = 194292107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194292739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20859 + ... + 28699.

It is an arithmetic number, because the mean of its divisors is an integer number (24702300).

Almost surely, 2^194292139 is an apocalyptic number.

194292139 is a deficient number, since it is larger than the sum of its proper divisors (3326261).

194292139 is an equidigital number, since it uses as much as digits as its factorization.

194292139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8261.

The product of its digits is 34992, while the sum is 40.

The square root of 194292139 is about 13938.8715109940. The cubic root of 194292139 is about 579.1864724130.

The spelling of 194292139 in words is "one hundred ninety-four million, two hundred ninety-two thousand, one hundred thirty-nine".