99939492 has 36 divisors (see below), whose sum is σ = 253418256. Its totient is φ = 33208560.

The previous prime is 99939491. The next prime is 99939527. The reversal of 99939492 is 29493999.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×99939492² = 19975804122436128, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (99939491) 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, 7723 + ... + 16109.

It is an arithmetic number, because the mean of its divisors is an integer number (7039396).

Almost surely, 2^99939492 is an apocalyptic number.

It is an amenable number.

99939492 is an abundant number, since it is smaller than the sum of its proper divisors (153478764).

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

99939492 is a wasteful number, since it uses less digits than its factorization.

99939492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728 (or 8723 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 54.

The square root of 99939492 is about 9996.9741422092. The cubic root of 99939492 is about 464.0652467205.

The spelling of 99939492 in words is "ninety-nine million, nine hundred thirty-nine thousand, four hundred ninety-two".