3240639495 has 24 divisors (see below), whose sum is σ = 5825151696. Its totient is φ = 1728340416.

The previous prime is 3240639461. The next prime is 3240639499. The reversal of 3240639495 is 5949360423.

3240639495 is a `hidden beast` number, since 3 + 2 + 4 + 0 + 639 + 4 + 9 + 5 = 666.

It is not a de Polignac number, because 3240639495 - 2⁹ = 3240638983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3240639495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240639499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332382 + ... + 1334811.

It is an arithmetic number, because the mean of its divisors is an integer number (242714654).

Almost surely, 2^3240639495 is an apocalyptic number.

3240639495 is a deficient number, since it is larger than the sum of its proper divisors (2584512201).

3240639495 is an equidigital number, since it uses as much as digits as its factorization.

3240639495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667213 (or 2667201 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 3240639495 is about 56926.6149968536. The cubic root of 3240639495 is about 1479.8245919156.

The spelling of 3240639495 in words is "three billion, two hundred forty million, six hundred thirty-nine thousand, four hundred ninety-five".