99911902 has 8 divisors (see below), whose sum is σ = 155035800. Its totient is φ = 48233304.

The previous prime is 99911897. The next prime is 99911921. The reversal of 99911902 is 20911999.

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

It is a super-2 number, since 2×99911902² = 19964776322515208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861252 + ... + 861367.

It is an arithmetic number, because the mean of its divisors is an integer number (19379475).

Almost surely, 2^99911902 is an apocalyptic number.

99911902 is a deficient number, since it is larger than the sum of its proper divisors (55123898).

99911902 is a wasteful number, since it uses less digits than its factorization.

99911902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722650.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 99911902 is about 9995.5941294152. The cubic root of 99911902 is about 464.0225384167.

The spelling of 99911902 in words is "ninety-nine million, nine hundred eleven thousand, nine hundred two".