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279472379 = 2331338821
BaseRepresentation
bin10000101010000…
…110100011111011
3201110212200000212
4100222012203323
51033021104004
643422021335
76632322164
oct2052064373
9643780025
10279472379
1113383380a
127971784b
1345b91494
142918c76b
151980696e
hex10a868fb

279472379 has 8 divisors (see below), whose sum is σ = 292562592. Its totient is φ = 266460480.

The previous prime is 279472373. The next prime is 279472393. The reversal of 279472379 is 973274972.

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 279472379 - 24 = 279472363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279472373) 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, 12212 + ... + 26609.

It is an arithmetic number, because the mean of its divisors is an integer number (36570324).

Almost surely, 2279472379 is an apocalyptic number.

279472379 is a deficient number, since it is larger than the sum of its proper divisors (13090213).

279472379 is a wasteful number, since it uses less digits than its factorization.

279472379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39157.

The product of its digits is 1333584, while the sum is 50.

The square root of 279472379 is about 16717.4274037604. The cubic root of 279472379 is about 653.8020790672.

The spelling of 279472379 in words is "two hundred seventy-nine million, four hundred seventy-two thousand, three hundred seventy-nine".

Divisors: 1 23 313 7199 38821 892883 12150973 279472379