99921348 has 18 divisors (see below), whose sum is σ = 252579054. Its totient is φ = 33307104.

The previous prime is 99921347. The next prime is 99921373. The reversal of 99921348 is 84312999.

It can be written as a sum of positive squares in only one way, i.e., 88510464 + 11410884 = 9408^2 + 3378^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×99921348² = 19968551572274208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99921347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1387761 + ... + 1387832.

Almost surely, 2^99921348 is an apocalyptic number.

It is an amenable number.

99921348 is an abundant number, since it is smaller than the sum of its proper divisors (152657706).

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

99921348 is a wasteful number, since it uses less digits than its factorization.

99921348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775603 (or 2775598 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 99921348 is about 9996.0666264286. The cubic root of 99921348 is about 464.0371613618.

The spelling of 99921348 in words is "ninety-nine million, nine hundred twenty-one thousand, three hundred forty-eight".