840964231 has 8 divisors (see below), whose sum is σ = 864191744. Its totient is φ = 817763040.

The previous prime is 840964181. The next prime is 840964247. The reversal of 840964231 is 132469048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 840964231 - 2¹⁵ = 840931463 is a prime.

It is a super-2 number, since 2×840964231² = 1414441675642842722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840964261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70426 + ... + 81496.

It is an arithmetic number, because the mean of its divisors is an integer number (108023968).

Almost surely, 2^840964231 is an apocalyptic number.

840964231 is a deficient number, since it is larger than the sum of its proper divisors (23227513).

840964231 is a wasteful number, since it uses less digits than its factorization.

840964231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13161.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 840964231 is about 28999.3832865459. The cubic root of 840964231 is about 943.8996855335.

The spelling of 840964231 in words is "eight hundred forty million, nine hundred sixty-four thousand, two hundred thirty-one".