1057400409 has 16 divisors (see below), whose sum is σ = 1520813952. Its totient is φ = 649638528.

The previous prime is 1057400363. The next prime is 1057400431. The reversal of 1057400409 is 9040047501.

It is a happy number.

It is not a de Polignac number, because 1057400409 - 2¹¹ = 1057398361 is a prime.

It is a super-2 number, since 2×1057400409² = 2236191249906734562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1057400489) 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, 2092 + ... + 46034.

It is an arithmetic number, because the mean of its divisors is an integer number (95050872).

Almost surely, 2^1057400409 is an apocalyptic number.

It is an amenable number.

1057400409 is a deficient number, since it is larger than the sum of its proper divisors (463413543).

1057400409 is a wasteful number, since it uses less digits than its factorization.

1057400409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44576.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1057400409 is about 32517.6937835388. The cubic root of 1057400409 is about 1018.7786255447.

The spelling of 1057400409 in words is "one billion, fifty-seven million, four hundred thousand, four hundred nine".