85387953 has 16 divisors (see below), whose sum is σ = 133289856. Its totient is φ = 47602560.

The previous prime is 85387943. The next prime is 85387961. The reversal of 85387953 is 35978358.

It is a happy number.

It is not a de Polignac number, because 85387953 - 2⁵ = 85387921 is a prime.

It is a super-2 number, since 2×85387953² = 14582205035060418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85387943) 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, 48726 + ... + 50447.

It is an arithmetic number, because the mean of its divisors is an integer number (8330616).

Almost surely, 2^85387953 is an apocalyptic number.

It is an amenable number.

85387953 is a deficient number, since it is larger than the sum of its proper divisors (47901903).

85387953 is a wasteful number, since it uses less digits than its factorization.

85387953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99224.

The product of its digits is 907200, while the sum is 48.

The square root of 85387953 is about 9240.5602102903. The cubic root of 85387953 is about 440.3508788631.

The spelling of 85387953 in words is "eighty-five million, three hundred eighty-seven thousand, nine hundred fifty-three".