397103649 has 8 divisors (see below), whose sum is σ = 530346240. Its totient is φ = 264298416.

The previous prime is 397103621. The next prime is 397103657. The reversal of 397103649 is 946301793.

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

It is not a de Polignac number, because 397103649 - 2¹⁶ = 397038113 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 397103649.

It is not an unprimeable number, because it can be changed into a prime (397103549) 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, 107214 + ... + 110855.

It is an arithmetic number, because the mean of its divisors is an integer number (66293280).

Almost surely, 2^397103649 is an apocalyptic number.

It is an amenable number.

397103649 is a deficient number, since it is larger than the sum of its proper divisors (133242591).

397103649 is a wasteful number, since it uses less digits than its factorization.

397103649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218679.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 397103649 is about 19927.4596725222. The cubic root of 397103649 is about 735.0236153271.

The spelling of 397103649 in words is "three hundred ninety-seven million, one hundred three thousand, six hundred forty-nine".