399937662 has 96 divisors (see below), whose sum is σ = 964035072. Its totient is φ = 123941664.

The previous prime is 399937649. The next prime is 399937709. The reversal of 399937662 is 266739993.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 399937599 and 399937608.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 413103 + ... + 414069.

It is an arithmetic number, because the mean of its divisors is an integer number (10042032).

Almost surely, 2^399937662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399937662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482017536).

399937662 is an abundant number, since it is smaller than the sum of its proper divisors (564097410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399937662 is a wasteful number, since it uses less digits than its factorization.

399937662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1032 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 54.

The square root of 399937662 is about 19998.4414892761. The cubic root of 399937662 is about 736.7680218803.

The spelling of 399937662 in words is "three hundred ninety-nine million, nine hundred thirty-seven thousand, six hundred sixty-two".