1406364257 has 2 divisors, whose sum is σ = 1406364258. Its totient is φ = 1406364256.

The previous prime is 1406364217. The next prime is 1406364277. The reversal of 1406364257 is 7524636041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1362791056 + 43573201 = 36916^2 + 6601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406364257 - 2¹⁶ = 1406298721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1406364257.

It is not a weakly prime, because it can be changed into another prime (1406364217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703182128 + 703182129.

It is an arithmetic number, because the mean of its divisors is an integer number (703182129).

Almost surely, 2^1406364257 is an apocalyptic number.

It is an amenable number.

1406364257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406364257 is an equidigital number, since it uses as much as digits as its factorization.

1406364257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 1406364257 is about 37501.5233957235. The cubic root of 1406364257 is about 1120.3815284464.

The spelling of 1406364257 in words is "one billion, four hundred six million, three hundred sixty-four thousand, two hundred fifty-seven".