397651143 has 8 divisors (see below), whose sum is σ = 542531968. Its totient is φ = 258935544.

The previous prime is 397651139. The next prime is 397651151. The reversal of 397651143 is 341156793.

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

It is not a de Polignac number, because 397651143 - 2² = 397651139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397651123) 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, 1541155 + ... + 1541412.

It is an arithmetic number, because the mean of its divisors is an integer number (67816496).

Almost surely, 2^397651143 is an apocalyptic number.

397651143 is a deficient number, since it is larger than the sum of its proper divisors (144880825).

397651143 is a wasteful number, since it uses less digits than its factorization.

397651143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082613.

The product of its digits is 68040, while the sum is 39.

The square root of 397651143 is about 19941.1921158190. The cubic root of 397651143 is about 735.3612569983.

The spelling of 397651143 in words is "three hundred ninety-seven million, six hundred fifty-one thousand, one hundred forty-three".