99940475 has 12 divisors (see below), whose sum is σ = 130449240. Its totient is φ = 75744000.

The previous prime is 99940429. The next prime is 99940499. The reversal of 99940475 is 57404999.

It is not a de Polignac number, because 99940475 - 2¹² = 99936379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104726 + ... + 105675.

It is an arithmetic number, because the mean of its divisors is an integer number (10870770).

Almost surely, 2^99940475 is an apocalyptic number.

99940475 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99940475 is a deficient number, since it is larger than the sum of its proper divisors (30508765).

99940475 is a wasteful number, since it uses less digits than its factorization.

99940475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210430 (or 210425 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 99940475 is about 9997.0233069649. The cubic root of 99940475 is about 464.0667682232.

The spelling of 99940475 in words is "ninety-nine million, nine hundred forty thousand, four hundred seventy-five".