1253413399 has 4 divisors (see below), whose sum is σ = 1432472464. Its totient is φ = 1074354336.

The previous prime is 1253413391. The next prime is 1253413459. The reversal of 1253413399 is 9933143521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9933143521 = 7 ⋅1419020503.

It is a cyclic number.

It is not a de Polignac number, because 1253413399 - 2³ = 1253413391 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 (1253413391) 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, 89529522 + ... + 89529535.

It is an arithmetic number, because the mean of its divisors is an integer number (358118116).

Almost surely, 2^1253413399 is an apocalyptic number.

1253413399 is a deficient number, since it is larger than the sum of its proper divisors (179059065).

1253413399 is an equidigital number, since it uses as much as digits as its factorization.

1253413399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179059064.

The product of its digits is 87480, while the sum is 40.

The square root of 1253413399 is about 35403.5789010094. The cubic root of 1253413399 is about 1078.1969798826.

The spelling of 1253413399 in words is "one billion, two hundred fifty-three million, four hundred thirteen thousand, three hundred ninety-nine".