396859873 has 4 divisors (see below), whose sum is σ = 399715120. Its totient is φ = 394004628.

The previous prime is 396859847. The next prime is 396859877. The reversal of 396859873 is 378958693.

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, and also an emirpimes, since its reverse is a distinct semiprime: 378958693 = 1151 ⋅329243.

It is a cyclic number.

It is not a de Polignac number, because 396859873 - 2²¹ = 394762721 is a prime.

It is a super-2 number, since 2×396859873² = 314995517595152258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396859877) 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 3 ways as a sum of consecutive naturals, for example, 1427415 + ... + 1427692.

It is an arithmetic number, because the mean of its divisors is an integer number (99928780).

Almost surely, 2^396859873 is an apocalyptic number.

It is an amenable number.

396859873 is a deficient number, since it is larger than the sum of its proper divisors (2855247).

396859873 is a wasteful number, since it uses less digits than its factorization.

396859873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855246.

The product of its digits is 9797760, while the sum is 58.

The square root of 396859873 is about 19921.3421485602. The cubic root of 396859873 is about 734.8731778655.

The spelling of 396859873 in words is "three hundred ninety-six million, eight hundred fifty-nine thousand, eight hundred seventy-three".