90450396 has 18 divisors (see below), whose sum is σ = 228638592. Its totient is φ = 30150120.

The previous prime is 90450389. The next prime is 90450401. The reversal of 90450396 is 69305409.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2512511 = 90450396 / (9 + 0 + 4 + 5 + 0 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 90450396.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256220 + ... + 1256291.

It is an arithmetic number, because the mean of its divisors is an integer number (12702144).

Almost surely, 2^90450396 is an apocalyptic number.

It is an amenable number.

90450396 is an abundant number, since it is smaller than the sum of its proper divisors (138188196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90450396 is a wasteful number, since it uses less digits than its factorization.

90450396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512521 (or 2512516 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 90450396 is about 9510.5413095155. The cubic root of 90450396 is about 448.8867891485.

The spelling of 90450396 in words is "ninety million, four hundred fifty thousand, three hundred ninety-six".