814405357 has 2 divisors, whose sum is σ = 814405358. Its totient is φ = 814405356.

The previous prime is 814405283. The next prime is 814405369. The reversal of 814405357 is 753504418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795578436 + 18826921 = 28206^2 + 4339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-814405357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814405387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407202678 + 407202679.

It is an arithmetic number, because the mean of its divisors is an integer number (407202679).

Almost surely, 2^814405357 is an apocalyptic number.

It is an amenable number.

814405357 is a deficient number, since it is larger than the sum of its proper divisors (1).

814405357 is an equidigital number, since it uses as much as digits as its factorization.

814405357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 814405357 is about 28537.7882289430. The cubic root of 814405357 is about 933.8566316998.

The spelling of 814405357 in words is "eight hundred fourteen million, four hundred five thousand, three hundred fifty-seven".