349313787 has 12 divisors (see below), whose sum is σ = 521963520. Its totient is φ = 224845488.

The previous prime is 349313779. The next prime is 349313801. The reversal of 349313787 is 787313943.

It is not a de Polignac number, because 349313787 - 2³ = 349313779 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (349313737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668923 + ... + 669444.

It is an arithmetic number, because the mean of its divisors is an integer number (43496960).

Almost surely, 2^349313787 is an apocalyptic number.

349313787 is a deficient number, since it is larger than the sum of its proper divisors (172649733).

349313787 is a wasteful number, since it uses less digits than its factorization.

349313787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338402 (or 1338399 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 349313787 is about 18689.9381218879. The cubic root of 349313787 is about 704.2690054047.

The spelling of 349313787 in words is "three hundred forty-nine million, three hundred thirteen thousand, seven hundred eighty-seven".