279045942 has 64 divisors (see below), whose sum is σ = 664879104. Its totient is φ = 76396320.

The previous prime is 279045887. The next prime is 279045953. The reversal of 279045942 is 249540972.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 279045894 and 279045903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138313 + ... + 140315.

It is an arithmetic number, because the mean of its divisors is an integer number (10388736).

Almost surely, 2^279045942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279045942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332439552).

279045942 is an abundant number, since it is smaller than the sum of its proper divisors (385833162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279045942 is a wasteful number, since it uses less digits than its factorization.

279045942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 279045942 is about 16704.6682696784. The cubic root of 279045942 is about 653.4693719795.

The spelling of 279045942 in words is "two hundred seventy-nine million, forty-five thousand, nine hundred forty-two".