402980477279 has 4 divisors (see below), whose sum is σ = 409810654920. Its totient is φ = 396150299640.

The previous prime is 402980477261. The next prime is 402980477281. The reversal of 402980477279 is 972774089204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402980477279 - 2⁸ = 402980477023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 6830177581 = 402980477279 / (4 + 0 + 2 + 9 + 8 + 0 + 4 + 7 + 7 + 2 + 7 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402980477209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3415088732 + ... + 3415088849.

It is an arithmetic number, because the mean of its divisors is an integer number (102452663730).

Almost surely, 2^402980477279 is an apocalyptic number.

402980477279 is a deficient number, since it is larger than the sum of its proper divisors (6830177641).

402980477279 is an equidigital number, since it uses as much as digits as its factorization.

402980477279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6830177640.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 402980477279 in words is "four hundred two billion, nine hundred eighty million, four hundred seventy-seven thousand, two hundred seventy-nine".