399675983 has 8 divisors (see below), whose sum is σ = 456893568. Its totient is φ = 342488664.

The previous prime is 399675979. The next prime is 399676009. The reversal of 399675983 is 389576993.

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

It is not a de Polignac number, because 399675983 - 2² = 399675979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399671983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46760 + ... + 54642.

It is an arithmetic number, because the mean of its divisors is an integer number (57111696).

Almost surely, 2^399675983 is an apocalyptic number.

399675983 is a deficient number, since it is larger than the sum of its proper divisors (57217585).

399675983 is an equidigital number, since it uses as much as digits as its factorization.

399675983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15133.

The product of its digits is 11022480, while the sum is 59.

The square root of 399675983 is about 19991.8979339131. The cubic root of 399675983 is about 736.6072978461.

The spelling of 399675983 in words is "three hundred ninety-nine million, six hundred seventy-five thousand, nine hundred eighty-three".