90447387 has 8 divisors (see below), whose sum is σ = 122396736. Its totient is φ = 59398152.

The previous prime is 90447373. The next prime is 90447389. The reversal of 90447387 is 78374409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90447387 - 2⁸ = 90447131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90447389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224793 + ... + 225194.

It is an arithmetic number, because the mean of its divisors is an integer number (15299592).

Almost surely, 2^90447387 is an apocalyptic number.

90447387 is a deficient number, since it is larger than the sum of its proper divisors (31949349).

90447387 is a wasteful number, since it uses less digits than its factorization.

90447387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450057.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 90447387 is about 9510.3831153114. The cubic root of 90447387 is about 448.8818114097.

The spelling of 90447387 in words is "ninety million, four hundred forty-seven thousand, three hundred eighty-seven".