347679940 has 48 divisors (see below), whose sum is σ = 749504448. Its totient is φ = 135402624.

The previous prime is 347679919. The next prime is 347679949. The reversal of 347679940 is 49976743.

It is not an unprimeable number, because it can be changed into a prime (347679949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449394 + ... + 450166.

It is an arithmetic number, because the mean of its divisors is an integer number (15614676).

Almost surely, 2^347679940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 347679940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374752224).

347679940 is an abundant number, since it is smaller than the sum of its proper divisors (401824508).

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

347679940 is a wasteful number, since it uses less digits than its factorization.

347679940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 347679940 is about 18646.1776243819. The cubic root of 347679940 is about 703.1692621091.

The spelling of 347679940 in words is "three hundred forty-seven million, six hundred seventy-nine thousand, nine hundred forty".