99976540 has 24 divisors (see below), whose sum is σ = 210742560. Its totient is φ = 39839808.

The previous prime is 99976531. The next prime is 99976549. The reversal of 99976540 is 4567999.

It is an interprime number because it is at equal distance from previous prime (99976531) and next prime (99976549).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99976549) 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, 3912 + ... + 14671.

It is an arithmetic number, because the mean of its divisors is an integer number (8780940).

Almost surely, 2^99976540 is an apocalyptic number.

It is an amenable number.

99976540 is an abundant number, since it is smaller than the sum of its proper divisors (110766020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99976540 is a wasteful number, since it uses less digits than its factorization.

99976540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18861 (or 18859 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 99976540 is about 9998.8269311955. The cubic root of 99976540 is about 464.1225832978.

The spelling of 99976540 in words is "ninety-nine million, nine hundred seventy-six thousand, five hundred forty".