99257387 has 4 divisors (see below), whose sum is σ = 104481480. Its totient is φ = 94033296.

The previous prime is 99257371. The next prime is 99257399. The reversal of 99257387 is 78375299.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99257387 - 2⁴ = 99257371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99257317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612018 + ... + 2612055.

It is an arithmetic number, because the mean of its divisors is an integer number (26120370).

Almost surely, 2^99257387 is an apocalyptic number.

99257387 is a deficient number, since it is larger than the sum of its proper divisors (5224093).

99257387 is a wasteful number, since it uses less digits than its factorization.

99257387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224092.

The product of its digits is 952560, while the sum is 50.

The square root of 99257387 is about 9962.8001585900. The cubic root of 99257387 is about 463.0070593708.

The spelling of 99257387 in words is "ninety-nine million, two hundred fifty-seven thousand, three hundred eighty-seven".