3479502640 has 20 divisors (see below), whose sum is σ = 8089843824. Its totient is φ = 1391801024.

The previous prime is 3479502577. The next prime is 3479502641. The reversal of 3479502640 is 462059743.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3479502593 and 3479502602.

It is not an unprimeable number, because it can be changed into a prime (3479502641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21746812 + ... + 21746971.

Almost surely, 2^3479502640 is an apocalyptic number.

It is an amenable number.

3479502640 is an abundant number, since it is smaller than the sum of its proper divisors (4610341184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3479502640 is a wasteful number, since it uses less digits than its factorization.

3479502640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43493796 (or 43493790 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 3479502640 is about 58987.3091435777. The cubic root of 3479502640 is about 1515.3247736160.

The spelling of 3479502640 in words is "three billion, four hundred seventy-nine million, five hundred two thousand, six hundred forty".