1357440899 has 4 divisors (see below), whose sum is σ = 1389009336. Its totient is φ = 1325872464.

The previous prime is 1357440857. The next prime is 1357440901. The reversal of 1357440899 is 9980447531.

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-1357440899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357440839) 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, 15784154 + ... + 15784239.

It is an arithmetic number, because the mean of its divisors is an integer number (347252334).

Almost surely, 2^1357440899 is an apocalyptic number.

1357440899 is a deficient number, since it is larger than the sum of its proper divisors (31568437).

1357440899 is an equidigital number, since it uses as much as digits as its factorization.

1357440899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31568436.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1357440899 is about 36843.4648072083. The cubic root of 1357440899 is about 1107.2362863384.

The spelling of 1357440899 in words is "one billion, three hundred fifty-seven million, four hundred forty thousand, eight hundred ninety-nine".