90304402 has 8 divisors (see below), whose sum is σ = 136655676. Its totient is φ = 44752512.

The previous prime is 90304393. The next prime is 90304411. The reversal of 90304402 is 20440309.

It is an interprime number because it is at equal distance from previous prime (90304393) and next prime (90304411).

It can be written as a sum of positive squares in 2 ways, for example, as 89510521 + 793881 = 9461^2 + 891^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199563 + ... + 200014.

Almost surely, 2^90304402 is an apocalyptic number.

90304402 is a deficient number, since it is larger than the sum of its proper divisors (46351274).

90304402 is a wasteful number, since it uses less digits than its factorization.

90304402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399692.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 90304402 is about 9502.8628317997. The cubic root of 90304402 is about 448.6451463186.

The spelling of 90304402 in words is "ninety million, three hundred four thousand, four hundred two".