399060123 has 16 divisors (see below), whose sum is σ = 663373056. Its totient is φ = 207303840.

The previous prime is 399060119. The next prime is 399060139. The reversal of 399060123 is 321060993.

It is not a de Polignac number, because 399060123 - 2² = 399060119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (399060323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863536 + ... + 863997.

It is an arithmetic number, because the mean of its divisors is an integer number (41460816).

Almost surely, 2^399060123 is an apocalyptic number.

399060123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

399060123 is a deficient number, since it is larger than the sum of its proper divisors (264312933).

399060123 is a wasteful number, since it uses less digits than its factorization.

399060123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727554.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 399060123 is about 19976.4892561231. The cubic root of 399060123 is about 736.2287577308.

The spelling of 399060123 in words is "three hundred ninety-nine million, sixty thousand, one hundred twenty-three".