397142865429 has 4 divisors (see below), whose sum is σ = 529523820576. Its totient is φ = 264761910284.

The previous prime is 397142865403. The next prime is 397142865433. The reversal of 397142865429 is 924568241793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397142865429 - 2⁸ = 397142865173 is a prime.

It is a super-2 number, since 2×397142865429² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397142865439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66190477569 + ... + 66190477574.

It is an arithmetic number, because the mean of its divisors is an integer number (132380955144).

Almost surely, 2^397142865429 is an apocalyptic number.

It is an amenable number.

397142865429 is a deficient number, since it is larger than the sum of its proper divisors (132380955147).

397142865429 is a wasteful number, since it uses less digits than its factorization.

397142865429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132380955146.

The product of its digits is 26127360, while the sum is 60.

The spelling of 397142865429 in words is "three hundred ninety-seven billion, one hundred forty-two million, eight hundred sixty-five thousand, four hundred twenty-nine".