85907144 has 8 divisors (see below), whose sum is σ = 161075910. Its totient is φ = 42953568.

The previous prime is 85907141. The next prime is 85907147. The reversal of 85907144 is 44170958.

It is an interprime number because it is at equal distance from previous prime (85907141) and next prime (85907147).

It can be written as a sum of positive squares in only one way, i.e., 85784644 + 122500 = 9262^2 + 350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 85907098 and 85907107.

It is not an unprimeable number, because it can be changed into a prime (85907141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5369189 + ... + 5369204.

Almost surely, 2^85907144 is an apocalyptic number.

It is an amenable number.

85907144 is a deficient number, since it is larger than the sum of its proper divisors (75168766).

85907144 is a wasteful number, since it uses less digits than its factorization.

85907144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10738399 (or 10738395 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 85907144 is about 9268.6106833764. The cubic root of 85907144 is about 441.2415759158.

The spelling of 85907144 in words is "eighty-five million, nine hundred seven thousand, one hundred forty-four".