99940870 has 16 divisors (see below), whose sum is σ = 180033840. Its totient is φ = 39945184.

The previous prime is 99940849. The next prime is 99940871. The reversal of 99940870 is 7804999.

It is a self number, because there is not a number n which added to its sum of digits gives 99940870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99940871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13104 + ... + 19276.

It is an arithmetic number, because the mean of its divisors is an integer number (11252115).

Almost surely, 2^99940870 is an apocalyptic number.

99940870 is a deficient number, since it is larger than the sum of its proper divisors (80092970).

99940870 is a wasteful number, since it uses less digits than its factorization.

99940870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 99940870 is about 9997.0430628261. The cubic root of 99940870 is about 464.0673796076.

The spelling of 99940870 in words is "ninety-nine million, nine hundred forty thousand, eight hundred seventy".