397780713 has 40 divisors (see below), whose sum is σ = 682381920. Its totient is φ = 228381120.

The previous prime is 397780711. The next prime is 397780759. The reversal of 397780713 is 317087793.

It is not a de Polignac number, because 397780713 - 2¹ = 397780711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397780711) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5181 + ... + 28677.

It is an arithmetic number, because the mean of its divisors is an integer number (17059548).

Almost surely, 2^397780713 is an apocalyptic number.

397780713 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

397780713 is a deficient number, since it is larger than the sum of its proper divisors (284601207).

397780713 is a wasteful number, since it uses less digits than its factorization.

397780713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23539 (or 23530 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 397780713 is about 19944.4406539767. The cubic root of 397780713 is about 735.4411179626.

The spelling of 397780713 in words is "three hundred ninety-seven million, seven hundred eighty thousand, seven hundred thirteen".