1349979900 has 36 divisors (see below), whose sum is σ = 3905942712. Its totient is φ = 359994560.

The previous prime is 1349979893. The next prime is 1349979931. The reversal of 1349979900 is 99799431.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 2249667 + ... + 2250266.

Almost surely, 2^1349979900 is an apocalyptic number.

1349979900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1349979900 is an abundant number, since it is smaller than the sum of its proper divisors (2555962812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1349979900 is a wasteful number, since it uses less digits than its factorization.

1349979900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499950 (or 4499943 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 1349979900 is about 36742.0726143749. The cubic root of 1349979900 is about 1105.2039644513.

The spelling of 1349979900 in words is "one billion, three hundred forty-nine million, nine hundred seventy-nine thousand, nine hundred".