99400599 has 12 divisors (see below), whose sum is σ = 146288376. Its totient is φ = 65016432.

The previous prime is 99400589. The next prime is 99400607. The reversal of 99400599 is 99500499.

It is a happy number.

It is not a de Polignac number, because 99400599 - 2⁴ = 99400583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99400559) 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, 103717 + ... + 104670.

It is an arithmetic number, because the mean of its divisors is an integer number (12190698).

Almost surely, 2^99400599 is an apocalyptic number.

99400599 is a deficient number, since it is larger than the sum of its proper divisors (46887777).

99400599 is a wasteful number, since it uses less digits than its factorization.

99400599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208446 (or 208443 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 99400599 is about 9969.9849047027. The cubic root of 99400599 is about 463.2296332398.

It can be divided in two parts, 99400 and 599, that added together give a palindrome (99999).

The spelling of 99400599 in words is "ninety-nine million, four hundred thousand, five hundred ninety-nine".