349620399639 has 36 divisors (see below), whose sum is σ = 585124424976. Its totient is φ = 197023731264.

The previous prime is 349620399619. The next prime is 349620399659. The reversal of 349620399639 is 936993026943.

349620399639 is a `hidden beast` number, since 3 + 496 + 20 + 3 + 9 + 96 + 39 = 666.

It is an interprime number because it is at equal distance from previous prime (349620399619) and next prime (349620399659).

It is not a de Polignac number, because 349620399639 - 2⁷ = 349620399511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349620399619) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40094322 + ... + 40103040.

Almost surely, 2^349620399639 is an apocalyptic number.

349620399639 is a deficient number, since it is larger than the sum of its proper divisors (235504025337).

349620399639 is an frugal number, since it uses more digits than its factorization.

349620399639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17524 (or 8802 counting only the distinct ones).

The product of its (nonzero) digits is 51018336, while the sum is 63.

The spelling of 349620399639 in words is "three hundred forty-nine billion, six hundred twenty million, three hundred ninety-nine thousand, six hundred thirty-nine".