1276474949 has 8 divisors (see below), whose sum is σ = 1301508000. Its totient is φ = 1251477136.

The previous prime is 1276474943. The next prime is 1276474961. The reversal of 1276474949 is 9494746721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1276474949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1276474949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276474943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71414 + ... + 87480.

It is an arithmetic number, because the mean of its divisors is an integer number (162688500).

Almost surely, 2^1276474949 is an apocalyptic number.

It is an amenable number.

1276474949 is a deficient number, since it is larger than the sum of its proper divisors (25033051).

1276474949 is a wasteful number, since it uses less digits than its factorization.

1276474949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17619.

The product of its digits is 3048192, while the sum is 53.

The square root of 1276474949 is about 35727.7895901776. The cubic root of 1276474949 is about 1084.7694156305.

The spelling of 1276474949 in words is "one billion, two hundred seventy-six million, four hundred seventy-four thousand, nine hundred forty-nine".