90396087 has 16 divisors (see below), whose sum is σ = 123420672. Its totient is φ = 58824800.

The previous prime is 90396079. The next prime is 90396109. The reversal of 90396087 is 78069309.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90396087 - 2³ = 90396079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90396077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77962 + ... + 79112.

It is an arithmetic number, because the mean of its divisors is an integer number (7713792).

Almost surely, 2^90396087 is an apocalyptic number.

90396087 is a deficient number, since it is larger than the sum of its proper divisors (33024585).

90396087 is a wasteful number, since it uses less digits than its factorization.

90396087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 90396087 is about 9507.6856805429. The cubic root of 90396087 is about 448.7969296802.

The spelling of 90396087 in words is "ninety million, three hundred ninety-six thousand, eighty-seven".