99321945 has 8 divisors (see below), whose sum is σ = 158915136. Its totient is φ = 52971696.

The previous prime is 99321919. The next prime is 99321983. The reversal of 99321945 is 54912399.

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

It is not a de Polignac number, because 99321945 - 2¹⁴ = 99305561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99321897 and 99321906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3310717 + ... + 3310746.

It is an arithmetic number, because the mean of its divisors is an integer number (19864392).

Almost surely, 2^99321945 is an apocalyptic number.

It is an amenable number.

99321945 is a deficient number, since it is larger than the sum of its proper divisors (59593191).

99321945 is a wasteful number, since it uses less digits than its factorization.

99321945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621471.

The product of its digits is 87480, while the sum is 42.

The square root of 99321945 is about 9966.0395845090. The cubic root of 99321945 is about 463.1074190940.

The spelling of 99321945 in words is "ninety-nine million, three hundred twenty-one thousand, nine hundred forty-five".