840995037 has 6 divisors (see below), whose sum is σ = 1214770622. Its totient is φ = 560663352.

The previous prime is 840995033. The next prime is 840995047. The reversal of 840995037 is 730599048.

It can be written as a sum of positive squares in only one way, i.e., 433722276 + 407272761 = 20826^2 + 20181^2 .

It is not a de Polignac number, because 840995037 - 2² = 840995033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840994983 and 840995001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840995033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46721938 + ... + 46721955.

Almost surely, 2^840995037 is an apocalyptic number.

It is an amenable number.

840995037 is a deficient number, since it is larger than the sum of its proper divisors (373775585).

840995037 is a wasteful number, since it uses less digits than its factorization.

840995037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93443899 (or 93443896 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 840995037 is about 28999.9144309082. The cubic root of 840995037 is about 943.9112109617.

The spelling of 840995037 in words is "eight hundred forty million, nine hundred ninety-five thousand, thirty-seven".