397499417 has 24 divisors (see below), whose sum is σ = 473704200. Its totient is φ = 332457216.

The previous prime is 397499411. The next prime is 397499419. The reversal of 397499417 is 714994793.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1449616 + 396049801 = 1204^2 + 19901^2 .

It is not a de Polignac number, because 397499417 - 2⁸ = 397499161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397499411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 698309 + ... + 698877.

It is an arithmetic number, because the mean of its divisors is an integer number (19737675).

Almost surely, 2^397499417 is an apocalyptic number.

It is an amenable number.

397499417 is a deficient number, since it is larger than the sum of its proper divisors (76204783).

397499417 is a wasteful number, since it uses less digits than its factorization.

397499417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 898 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The square root of 397499417 is about 19937.3874166100. The cubic root of 397499417 is about 735.2677180446.

The spelling of 397499417 in words is "three hundred ninety-seven million, four hundred ninety-nine thousand, four hundred seventeen".