99073977 has 8 divisors (see below), whose sum is σ = 139869216. Its totient is φ = 62164032.

The previous prime is 99073973. The next prime is 99073981. The reversal of 99073977 is 77937099.

It is an interprime number because it is at equal distance from previous prime (99073973) and next prime (99073981).

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

It is not a de Polignac number, because 99073977 - 2² = 99073973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1942627 = 99073977 / (9 + 9 + 0 + 7 + 3 + 9 + 7 + 7).

It is not an unprimeable number, because it can be changed into a prime (99073973) 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, 971263 + ... + 971364.

It is an arithmetic number, because the mean of its divisors is an integer number (17483652).

Almost surely, 2^99073977 is an apocalyptic number.

It is an amenable number.

99073977 is a deficient number, since it is larger than the sum of its proper divisors (40795239).

99073977 is a wasteful number, since it uses less digits than its factorization.

99073977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942647.

The product of its (nonzero) digits is 750141, while the sum is 51.

The square root of 99073977 is about 9953.5911609831. The cubic root of 99073977 is about 462.7216986306.

Subtracting from 99073977 its sum of digits (51), we obtain a triangular number (99073926 = T₁₄₀₇₆).

The spelling of 99073977 in words is "ninety-nine million, seventy-three thousand, nine hundred seventy-seven".