83772099 has 12 divisors (see below), whose sum is σ = 122662696. Its totient is φ = 55082592.

The previous prime is 83772071. The next prime is 83772109. The reversal of 83772099 is 99027738.

It is not a de Polignac number, because 83772099 - 2⁵ = 83772067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83772019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63097 + ... + 64410.

Almost surely, 2^83772099 is an apocalyptic number.

83772099 is a deficient number, since it is larger than the sum of its proper divisors (38890597).

83772099 is a wasteful number, since it uses less digits than its factorization.

83772099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127586 (or 127583 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 83772099 is about 9152.7099265737. The cubic root of 83772099 is about 437.5554850990. Note that the first 3 decimals are identical.

The spelling of 83772099 in words is "eighty-three million, seven hundred seventy-two thousand, ninety-nine".