99621802 has 24 divisors (see below), whose sum is σ = 184058244. Its totient is φ = 40182912.

The previous prime is 99621793. The next prime is 99621803. The reversal of 99621802 is 20812699.

It can be written as a sum of positive squares in 2 ways, for example, as 93721761 + 5900041 = 9681^2 + 2429^2 .

It is not an unprimeable number, because it can be changed into a prime (99621803) 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, 28233 + ... + 31564.

Almost surely, 2^99621802 is an apocalyptic number.

99621802 is a deficient number, since it is larger than the sum of its proper divisors (84436442).

99621802 is a wasteful number, since it uses less digits than its factorization.

99621802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59830 (or 59823 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 99621802 is about 9981.0721868946. The cubic root of 99621802 is about 463.5729975987.

The spelling of 99621802 in words is "ninety-nine million, six hundred twenty-one thousand, eight hundred two".