402260979 has 8 divisors (see below), whose sum is σ = 536596480. Its totient is φ = 268049736.

The previous prime is 402260959. The next prime is 402260981. The reversal of 402260979 is 979062204.

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

It is a de Polignac number, because none of the positive numbers 2^k-402260979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402260959) 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, 23227 + ... + 36660.

It is an arithmetic number, because the mean of its divisors is an integer number (67074560).

Almost surely, 2^402260979 is an apocalyptic number.

402260979 is a deficient number, since it is larger than the sum of its proper divisors (134335501).

402260979 is a wasteful number, since it uses less digits than its factorization.

402260979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62129.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 402260979 is about 20056.4448245446. Note that the first 3 decimals coincide. The cubic root of 402260979 is about 738.1919452111.

The spelling of 402260979 in words is "four hundred two million, two hundred sixty thousand, nine hundred seventy-nine".