1349905904 has 20 divisors (see below), whose sum is σ = 2618251320. Its totient is φ = 674228160.

The previous prime is 1349905873. The next prime is 1349905913. The reversal of 1349905904 is 4095099431.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29774 + ... + 59885.

It is an arithmetic number, because the mean of its divisors is an integer number (130912566).

Almost surely, 2^1349905904 is an apocalyptic number.

It is an amenable number.

1349905904 is a deficient number, since it is larger than the sum of its proper divisors (1268345416).

1349905904 is an equidigital number, since it uses as much as digits as its factorization.

1349905904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90608 (or 90602 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 1349905904 is about 36741.0656350629. The cubic root of 1349905904 is about 1105.1837710231.

The spelling of 1349905904 in words is "one billion, three hundred forty-nine million, nine hundred five thousand, nine hundred four".