397407527 has 8 divisors (see below), whose sum is σ = 435352320. Its totient is φ = 359765560.

The previous prime is 397407481. The next prime is 397407551. The reversal of 397407527 is 725704793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397407527 - 2⁶ = 397407463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397437527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72953 + ... + 78210.

It is an arithmetic number, because the mean of its divisors is an integer number (54419040).

Almost surely, 2^397407527 is an apocalyptic number.

397407527 is a deficient number, since it is larger than the sum of its proper divisors (37944793).

397407527 is a wasteful number, since it uses less digits than its factorization.

397407527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151413.

The product of its (nonzero) digits is 370440, while the sum is 44.

The square root of 397407527 is about 19935.0828189902. The cubic root of 397407527 is about 735.2110563619.

The spelling of 397407527 in words is "three hundred ninety-seven million, four hundred seven thousand, five hundred twenty-seven".