90487297 has 4 divisors (see below), whose sum is σ = 92021040. Its totient is φ = 88953556.

The previous prime is 90487283. The next prime is 90487301. The reversal of 90487297 is 79278409.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79278409 = 7 ⋅11325487.

It is a cyclic number.

It is not a de Polignac number, because 90487297 - 2²³ = 82098689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90487207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766783 + ... + 766900.

It is an arithmetic number, because the mean of its divisors is an integer number (23005260).

Almost surely, 2^90487297 is an apocalyptic number.

It is an amenable number.

90487297 is a deficient number, since it is larger than the sum of its proper divisors (1533743).

90487297 is a wasteful number, since it uses less digits than its factorization.

90487297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533742.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 90487297 is about 9512.4811169326. The cubic root of 90487297 is about 448.9478248839.

The spelling of 90487297 in words is "ninety million, four hundred eighty-seven thousand, two hundred ninety-seven".