85399963 has 16 divisors (see below), whose sum is σ = 95397120. Its totient is φ = 75794400.

The previous prime is 85399961. The next prime is 85399973. The reversal of 85399963 is 36999358.

It is a happy number.

It is not a de Polignac number, because 85399963 - 2¹ = 85399961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85399963.

It is not an unprimeable number, because it can be changed into a prime (85399961) 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, 117106 + ... + 117832.

It is an arithmetic number, because the mean of its divisors is an integer number (5962320).

Almost surely, 2^85399963 is an apocalyptic number.

85399963 is a deficient number, since it is larger than the sum of its proper divisors (9997157).

85399963 is a wasteful number, since it uses less digits than its factorization.

85399963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its digits is 1574640, while the sum is 52.

The square root of 85399963 is about 9241.2100398162. The cubic root of 85399963 is about 440.3715233293.

The spelling of 85399963 in words is "eighty-five million, three hundred ninety-nine thousand, nine hundred sixty-three".