347744399 has 4 divisors (see below), whose sum is σ = 355143264. Its totient is φ = 340345536.

The previous prime is 347744351. The next prime is 347744417. The reversal of 347744399 is 993447743.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 347744399 - 2¹² = 347740303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347744699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3699362 + ... + 3699455.

It is an arithmetic number, because the mean of its divisors is an integer number (88785816).

Almost surely, 2^347744399 is an apocalyptic number.

347744399 is a deficient number, since it is larger than the sum of its proper divisors (7398865).

347744399 is an equidigital number, since it uses as much as digits as its factorization.

347744399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398864.

The product of its digits is 2286144, while the sum is 50.

The square root of 347744399 is about 18647.9060218567. The cubic root of 347744399 is about 703.2127147039.

The spelling of 347744399 in words is "three hundred forty-seven million, seven hundred forty-four thousand, three hundred ninety-nine".