99535947 has 16 divisors (see below), whose sum is σ = 156567552. Its totient is φ = 55042560.

The previous prime is 99535939. The next prime is 99535963. The reversal of 99535947 is 74953599.

It is a happy number.

It is not a de Polignac number, because 99535947 - 2³ = 99535939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99535947.

It is not an unprimeable number, because it can be changed into a prime (99535907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75798 + ... + 77099.

It is an arithmetic number, because the mean of its divisors is an integer number (9785472).

Almost surely, 2^99535947 is an apocalyptic number.

99535947 is a deficient number, since it is larger than the sum of its proper divisors (57031605).

99535947 is a wasteful number, since it uses less digits than its factorization.

99535947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152938.

The product of its digits is 1530900, while the sum is 51.

The square root of 99535947 is about 9976.7703692127. The cubic root of 99535947 is about 463.4397888106.

The spelling of 99535947 in words is "ninety-nine million, five hundred thirty-five thousand, nine hundred forty-seven".