90477287 has 2 divisors, whose sum is σ = 90477288. Its totient is φ = 90477286.

The previous prime is 90477263. The next prime is 90477301. The reversal of 90477287 is 78277409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90477287 - 2¹⁶ = 90411751 is a prime.

It is a super-2 number, since 2×90477287² = 16372278925760738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90497287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45238643 + 45238644.

It is an arithmetic number, because the mean of its divisors is an integer number (45238644).

Almost surely, 2^90477287 is an apocalyptic number.

90477287 is a deficient number, since it is larger than the sum of its proper divisors (1).

90477287 is an equidigital number, since it uses as much as digits as its factorization.

90477287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 90477287 is about 9511.9549515334. The cubic root of 90477287 is about 448.9312695824.

The spelling of 90477287 in words is "ninety million, four hundred seventy-seven thousand, two hundred eighty-seven".