99928497 has 4 divisors (see below), whose sum is σ = 133238000. Its totient is φ = 66618996.

The previous prime is 99928483. The next prime is 99928511. The reversal of 99928497 is 79482999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (99928483) and next prime (99928511).

It is not a de Polignac number, because 99928497 - 2¹⁹ = 99404209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99928427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16654747 + ... + 16654752.

It is an arithmetic number, because the mean of its divisors is an integer number (33309500).

Almost surely, 2^99928497 is an apocalyptic number.

It is an amenable number.

99928497 is a deficient number, since it is larger than the sum of its proper divisors (33309503).

99928497 is a wasteful number, since it uses less digits than its factorization.

99928497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33309502.

The product of its digits is 2939328, while the sum is 57.

The square root of 99928497 is about 9996.4242106865. The cubic root of 99928497 is about 464.0482278076.

The spelling of 99928497 in words is "ninety-nine million, nine hundred twenty-eight thousand, four hundred ninety-seven".