715450391 has 2 divisors, whose sum is σ = 715450392. Its totient is φ = 715450390.

The previous prime is 715450381. The next prime is 715450429. The reversal of 715450391 is 193054517.

It is a weak prime.

It is an emirp because it is prime and its reverse (193054517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 715450391 - 2⁶ = 715450327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715450331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357725195 + 357725196.

It is an arithmetic number, because the mean of its divisors is an integer number (357725196).

Almost surely, 2^715450391 is an apocalyptic number.

715450391 is a deficient number, since it is larger than the sum of its proper divisors (1).

715450391 is an equidigital number, since it uses as much as digits as its factorization.

715450391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 715450391 is about 26747.9044225898. The cubic root of 715450391 is about 894.3891219630.

The spelling of 715450391 in words is "seven hundred fifteen million, four hundred fifty thousand, three hundred ninety-one".