99481997 has 8 divisors (see below), whose sum is σ = 100482144. Its totient is φ = 98486928.

The previous prime is 99481979. The next prime is 99481999. The reversal of 99481997 is 79918499.

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

It is a cyclic number.

It is not a de Polignac number, because 99481997 - 2⁶ = 99481933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99481999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46718 + ... + 48800.

It is an arithmetic number, because the mean of its divisors is an integer number (12560268).

Almost surely, 2^99481997 is an apocalyptic number.

It is an amenable number.

99481997 is a deficient number, since it is larger than the sum of its proper divisors (1000147).

99481997 is a wasteful number, since it uses less digits than its factorization.

99481997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539.

The product of its digits is 1469664, while the sum is 56.

The square root of 99481997 is about 9974.0662219578. The cubic root of 99481997 is about 463.3560432025.

The spelling of 99481997 in words is "ninety-nine million, four hundred eighty-one thousand, nine hundred ninety-seven".