90400407 has 8 divisors (see below), whose sum is σ = 127624176. Its totient is φ = 56721792.

The previous prime is 90400399. The next prime is 90400417. The reversal of 90400407 is 70400409.

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

It is not a de Polignac number, because 90400407 - 2³ = 90400399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90400417) 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, 886228 + ... + 886329.

It is an arithmetic number, because the mean of its divisors is an integer number (15953022).

Almost surely, 2^90400407 is an apocalyptic number.

90400407 is a deficient number, since it is larger than the sum of its proper divisors (37223769).

90400407 is a wasteful number, since it uses less digits than its factorization.

90400407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772577.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 90400407 is about 9507.9128624530. The cubic root of 90400407 is about 448.8040788534.

The spelling of 90400407 in words is "ninety million, four hundred thousand, four hundred seven".