1290492799 has 4 divisors (see below), whose sum is σ = 1295290440. Its totient is φ = 1285695160.

The previous prime is 1290492767. The next prime is 1290492817. The reversal of 1290492799 is 9972940921.

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

It is a cyclic number.

It is not a de Polignac number, because 1290492799 - 2⁵ = 1290492767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290492739) 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, 2398417 + ... + 2398954.

It is an arithmetic number, because the mean of its divisors is an integer number (323822610).

Almost surely, 2^1290492799 is an apocalyptic number.

1290492799 is a deficient number, since it is larger than the sum of its proper divisors (4797641).

1290492799 is an equidigital number, since it uses as much as digits as its factorization.

1290492799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4797640.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 1290492799 is about 35923.4296664447. The cubic root of 1290492799 is about 1088.7258345908.

The spelling of 1290492799 in words is "one billion, two hundred ninety million, four hundred ninety-two thousand, seven hundred ninety-nine".