397749835 has 8 divisors (see below), whose sum is σ = 545485536. Its totient is φ = 272742720.

The previous prime is 397749823. The next prime is 397749839. The reversal of 397749835 is 538947793.

It is a happy number.

397749835 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-397749835 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397749839) 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 7 ways as a sum of consecutive naturals, for example, 5682106 + ... + 5682175.

It is an arithmetic number, because the mean of its divisors is an integer number (68185692).

Almost surely, 2^397749835 is an apocalyptic number.

397749835 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

397749835 is a deficient number, since it is larger than the sum of its proper divisors (147735701).

397749835 is a wasteful number, since it uses less digits than its factorization.

397749835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11364293.

The product of its digits is 5715360, while the sum is 55.

The square root of 397749835 is about 19943.6665385280. Note that the first 3 decimals coincide. The cubic root of 397749835 is about 735.4220877636.

The spelling of 397749835 in words is "three hundred ninety-seven million, seven hundred forty-nine thousand, eight hundred thirty-five".