399474623 has 8 divisors (see below), whose sum is σ = 413478000. Its totient is φ = 385486528.

The previous prime is 399474617. The next prime is 399474637. The reversal of 399474623 is 326474993.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 399474623 - 2⁸ = 399474367 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 (399474643) 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, 83603 + ... + 88251.

It is an arithmetic number, because the mean of its divisors is an integer number (51684750).

Almost surely, 2^399474623 is an apocalyptic number.

399474623 is a deficient number, since it is larger than the sum of its proper divisors (14003377).

399474623 is a wasteful number, since it uses less digits than its factorization.

399474623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641.

The product of its digits is 979776, while the sum is 47.

The square root of 399474623 is about 19986.8612593373. The cubic root of 399474623 is about 736.4835741569.

The spelling of 399474623 in words is "three hundred ninety-nine million, four hundred seventy-four thousand, six hundred twenty-three".