90883887 has 16 divisors (see below), whose sum is σ = 128550240. Its totient is φ = 56916992.

The previous prime is 90883831. The next prime is 90883889. The reversal of 90883887 is 78838809.

It is a cyclic number.

It is not a de Polignac number, because 90883887 - 2⁶ = 90883823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90883889) 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, 31939 + ... + 34667.

It is an arithmetic number, because the mean of its divisors is an integer number (8034390).

Almost surely, 2^90883887 is an apocalyptic number.

90883887 is a deficient number, since it is larger than the sum of its proper divisors (37666353).

90883887 is a wasteful number, since it uses less digits than its factorization.

90883887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 90883887 is about 9533.3040966918. The cubic root of 90883887 is about 449.6027556024.

The spelling of 90883887 in words is "ninety million, eight hundred eighty-three thousand, eight hundred eighty-seven".