90319402 has 8 divisors (see below), whose sum is σ = 143448516. Its totient is φ = 42503232.

The previous prime is 90319387. The next prime is 90319403. The reversal of 90319402 is 20491309.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 89321401 + 998001 = 9451^2 + 999^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90319403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1328193 + ... + 1328260.

Almost surely, 2^90319402 is an apocalyptic number.

90319402 is a deficient number, since it is larger than the sum of its proper divisors (53129114).

90319402 is a wasteful number, since it uses less digits than its factorization.

90319402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656472.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90319402 is about 9503.6520348759. The cubic root of 90319402 is about 448.6699856563.

The spelling of 90319402 in words is "ninety million, three hundred nineteen thousand, four hundred two".