99791954 has 8 divisors (see below), whose sum is σ = 149752908. Its totient is φ = 49874320.

The previous prime is 99791953. The next prime is 99791959. The reversal of 99791954 is 45919799.

It can be written as a sum of positive squares in 2 ways, for example, as 96569929 + 3222025 = 9827^2 + 1795^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 99791896 and 99791905.

It is not an unprimeable number, because it can be changed into a prime (99791953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277 + ... + 14760.

Almost surely, 2^99791954 is an apocalyptic number.

99791954 is a deficient number, since it is larger than the sum of its proper divisors (49960954).

99791954 is a wasteful number, since it uses less digits than its factorization.

99791954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21660.

The product of its digits is 918540, while the sum is 53.

The square root of 99791954 is about 9989.5922839724. The cubic root of 99791954 is about 463.8367718811.

The spelling of 99791954 in words is "ninety-nine million, seven hundred ninety-one thousand, nine hundred fifty-four".