402990485 has 8 divisors (see below), whose sum is σ = 483696600. Its totient is φ = 322320384.

The previous prime is 402990479. The next prime is 402990493. The reversal of 402990485 is 584099204.

It can be written as a sum of positive squares in 4 ways, for example, as 12453841 + 390536644 = 3529^2 + 19762^2 .

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 402990485 - 2⁸ = 402990229 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36941 + ... + 46589.

It is an arithmetic number, because the mean of its divisors is an integer number (60462075).

Almost surely, 2^402990485 is an apocalyptic number.

It is an amenable number.

402990485 is a deficient number, since it is larger than the sum of its proper divisors (80706115).

402990485 is an equidigital number, since it uses as much as digits as its factorization.

402990485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18007.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 402990485 is about 20074.6229105306. The cubic root of 402990485 is about 738.6379162545.

The spelling of 402990485 in words is "four hundred two million, nine hundred ninety thousand, four hundred eighty-five".