397454739 has 16 divisors (see below), whose sum is σ = 587917440. Its totient is φ = 236797760.

The previous prime is 397454731. The next prime is 397454797. The reversal of 397454739 is 937454793.

It is a cyclic number.

It is not a de Polignac number, because 397454739 - 2³ = 397454731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397454691 and 397454700.

It is not an unprimeable number, because it can be changed into a prime (397454731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100122 + ... + 104015.

It is an arithmetic number, because the mean of its divisors is an integer number (36744840).

Almost surely, 2^397454739 is an apocalyptic number.

397454739 is a deficient number, since it is larger than the sum of its proper divisors (190462701).

397454739 is a wasteful number, since it uses less digits than its factorization.

397454739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204210.

The product of its digits is 2857680, while the sum is 51.

The square root of 397454739 is about 19936.2669273864. The cubic root of 397454739 is about 735.2401695581.

The spelling of 397454739 in words is "three hundred ninety-seven million, four hundred fifty-four thousand, seven hundred thirty-nine".