399212614 has 4 divisors (see below), whose sum is σ = 598818924. Its totient is φ = 199606306.

The previous prime is 399212557. The next prime is 399212617. The reversal of 399212614 is 416212993.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×399212614² = 318741422353425992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399212617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99803152 + ... + 99803155.

It is an arithmetic number, because the mean of its divisors is an integer number (149704731).

Almost surely, 2^399212614 is an apocalyptic number.

399212614 is a deficient number, since it is larger than the sum of its proper divisors (199606310).

399212614 is a wasteful number, since it uses less digits than its factorization.

399212614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199606309.

The product of its digits is 23328, while the sum is 37.

The square root of 399212614 is about 19980.3056533177. The cubic root of 399212614 is about 736.3225230190.

The spelling of 399212614 in words is "three hundred ninety-nine million, two hundred twelve thousand, six hundred fourteen".