399709739222 has 8 divisors (see below), whose sum is σ = 625632635376. Its totient is φ = 191165527432.

The previous prime is 399709739179. The next prime is 399709739249. The reversal of 399709739222 is 222937907993.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4344671033 + ... + 4344671124.

It is an arithmetic number, because the mean of its divisors is an integer number (78204079422).

Almost surely, 2^399709739222 is an apocalyptic number.

399709739222 is a deficient number, since it is larger than the sum of its proper divisors (225922896154).

399709739222 is a wasteful number, since it uses less digits than its factorization.

399709739222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8689342182.

The product of its (nonzero) digits is 23147208, while the sum is 62.

The spelling of 399709739222 in words is "three hundred ninety-nine billion, seven hundred nine million, seven hundred thirty-nine thousand, two hundred twenty-two".