3440347138 has 16 divisors (see below), whose sum is σ = 5448558240. Its totient is φ = 1624708800.

The previous prime is 3440347133. The next prime is 3440347189. The reversal of 3440347138 is 8317430443.

It is a junction number, because it is equal to n+sod(n) for n = 3440347097 and 3440347106.

It is not an unprimeable number, because it can be changed into a prime (3440347133) 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, 124183 + ... + 149338.

It is an arithmetic number, because the mean of its divisors is an integer number (340534890).

Almost surely, 2^3440347138 is an apocalyptic number.

3440347138 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3440347138 is a deficient number, since it is larger than the sum of its proper divisors (2008211102).

3440347138 is a wasteful number, since it uses less digits than its factorization.

3440347138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273873.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 3440347138 is about 58654.4724466941. The cubic root of 3440347138 is about 1509.6192391125.

The spelling of 3440347138 in words is "three billion, four hundred forty million, three hundred forty-seven thousand, one hundred thirty-eight".