1276490099 has 4 divisors (see below), whose sum is σ = 1279259520. Its totient is φ = 1273720680.

The previous prime is 1276490009. The next prime is 1276490113. The reversal of 1276490099 is 9900946721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1276490099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1276490009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384019 + ... + 1384940.

It is an arithmetic number, because the mean of its divisors is an integer number (319814880).

Almost surely, 2^1276490099 is an apocalyptic number.

1276490099 is a deficient number, since it is larger than the sum of its proper divisors (2769421).

1276490099 is an equidigital number, since it uses as much as digits as its factorization.

1276490099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769420.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1276490099 is about 35728.0016093820. The cubic root of 1276490099 is about 1084.7737071866.

The spelling of 1276490099 in words is "one billion, two hundred seventy-six million, four hundred ninety thousand, ninety-nine".