402889479 has 8 divisors (see below), whose sum is σ = 539999232. Its totient is φ = 267186360.

The previous prime is 402889469. The next prime is 402889481. The reversal of 402889479 is 974988204.

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

It is not a de Polignac number, because 402889479 - 2⁵ = 402889447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402889469) 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, 350989 + ... + 352134.

It is an arithmetic number, because the mean of its divisors is an integer number (67499904).

Almost surely, 2^402889479 is an apocalyptic number.

402889479 is a deficient number, since it is larger than the sum of its proper divisors (137109753).

402889479 is a wasteful number, since it uses less digits than its factorization.

402889479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703317.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 402889479 is about 20072.1069895514. The cubic root of 402889479 is about 738.5762000782.

The spelling of 402889479 in words is "four hundred two million, eight hundred eighty-nine thousand, four hundred seventy-nine".