412739857 has 4 divisors (see below), whose sum is σ = 413113140. Its totient is φ = 412366576.

The previous prime is 412739819. The next prime is 412739863. The reversal of 412739857 is 758937214.

It is a Cunningham number, because it is equal to 20316²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6677056 + 406062801 = 2584^2 + 20151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-412739857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (412739897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184978 + ... + 187195.

It is an arithmetic number, because the mean of its divisors is an integer number (103278285).

Almost surely, 2^412739857 is an apocalyptic number.

It is an amenable number.

412739857 is a deficient number, since it is larger than the sum of its proper divisors (373283).

412739857 is a wasteful number, since it uses less digits than its factorization.

412739857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373282.

The product of its digits is 423360, while the sum is 46.

The square root of 412739857 is about 20316.0000246111. Note that the first 4 decimals coincide. The cubic root of 412739857 is about 744.5470315239.

The spelling of 412739857 in words is "four hundred twelve million, seven hundred thirty-nine thousand, eight hundred fifty-seven".