90943587 has 32 divisors (see below), whose sum is σ = 160680960. Its totient is φ = 49705920.

The previous prime is 90943577. The next prime is 90943607. The reversal of 90943587 is 78534909.

It is not a de Polignac number, because 90943587 - 2⁴ = 90943571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90943537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6114 + ... + 14807.

It is an arithmetic number, because the mean of its divisors is an integer number (5021280).

Almost surely, 2^90943587 is an apocalyptic number.

90943587 is a deficient number, since it is larger than the sum of its proper divisors (69737373).

90943587 is a wasteful number, since it uses less digits than its factorization.

90943587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960 (or 20954 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 90943587 is about 9536.4347111486. The cubic root of 90943587 is about 449.7011793911.

The spelling of 90943587 in words is "ninety million, nine hundred forty-three thousand, five hundred eighty-seven".