397651101 has 8 divisors (see below), whose sum is σ = 533713344. Its totient is φ = 263344800.

The previous prime is 397650991. The next prime is 397651123. The reversal of 397651101 is 101156793.

It is a happy number.

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

It is not a de Polignac number, because 397651101 - 2¹³ = 397642909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397651151) 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, 438456 + ... + 439361.

It is an arithmetic number, because the mean of its divisors is an integer number (66714168).

Almost surely, 2^397651101 is an apocalyptic number.

It is an amenable number.

397651101 is a deficient number, since it is larger than the sum of its proper divisors (136062243).

397651101 is a wasteful number, since it uses less digits than its factorization.

397651101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877971.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 397651101 is about 19941.1910627224. The cubic root of 397651101 is about 735.3612311087.

The spelling of 397651101 in words is "three hundred ninety-seven million, six hundred fifty-one thousand, one hundred one".