397124409 has 16 divisors (see below), whose sum is σ = 578062080. Its totient is φ = 240503760.

The previous prime is 397124407. The next prime is 397124411. The reversal of 397124409 is 904421793.

It is an interprime number because it is at equal distance from previous prime (397124407) and next prime (397124411).

It is not a de Polignac number, because 397124409 - 2¹ = 397124407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397124407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51402 + ... + 58620.

It is an arithmetic number, because the mean of its divisors is an integer number (36128880).

Almost surely, 2^397124409 is an apocalyptic number.

It is an amenable number.

397124409 is a deficient number, since it is larger than the sum of its proper divisors (180937671).

397124409 is a wasteful number, since it uses less digits than its factorization.

397124409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8900.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 397124409 is about 19927.9805549885. The cubic root of 397124409 is about 735.0364237584.

The spelling of 397124409 in words is "three hundred ninety-seven million, one hundred twenty-four thousand, four hundred nine".