1290248239 has 16 divisors (see below), whose sum is σ = 1510629120. Its totient is φ = 1078943040.

The previous prime is 1290248233. The next prime is 1290248249. The reversal of 1290248239 is 9328420921.

It is not a de Polignac number, because 1290248239 - 2³ = 1290248231 is a prime.

It is a super-2 number, since 2×1290248239² = 3329481036485202242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290248231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326427 + ... + 330355.

It is an arithmetic number, because the mean of its divisors is an integer number (94414320).

Almost surely, 2^1290248239 is an apocalyptic number.

1290248239 is a deficient number, since it is larger than the sum of its proper divisors (220380881).

1290248239 is a wasteful number, since it uses less digits than its factorization.

1290248239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1290248239 is about 35920.0255985432. The cubic root of 1290248239 is about 1088.6570557977.

The spelling of 1290248239 in words is "one billion, two hundred ninety million, two hundred forty-eight thousand, two hundred thirty-nine".