99931954 has 4 divisors (see below), whose sum is σ = 149897934. Its totient is φ = 49965976.

The previous prime is 99931943. The next prime is 99931961. The reversal of 99931954 is 45913999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77035729 + 22896225 = 8777^2 + 4785^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99931898 and 99931907.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24982987 + ... + 24982990.

Almost surely, 2^99931954 is an apocalyptic number.

99931954 is a deficient number, since it is larger than the sum of its proper divisors (49965980).

99931954 is a wasteful number, since it uses less digits than its factorization.

99931954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49965979.

The product of its digits is 393660, while the sum is 49.

The square root of 99931954 is about 9996.5971210207. The cubic root of 99931954 is about 464.0535789546.

The spelling of 99931954 in words is "ninety-nine million, nine hundred thirty-one thousand, nine hundred fifty-four".