399041234 has 4 divisors (see below), whose sum is σ = 598561854. Its totient is φ = 199520616.

The previous prime is 399041231. The next prime is 399041273. The reversal of 399041234 is 432140993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432140993 = 7253 ⋅59581.

It can be written as a sum of positive squares in only one way, i.e., 395890609 + 3150625 = 19897^2 + 1775^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 399041194 and 399041203.

It is not an unprimeable number, because it can be changed into a prime (399041231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99760307 + ... + 99760310.

Almost surely, 2^399041234 is an apocalyptic number.

399041234 is a deficient number, since it is larger than the sum of its proper divisors (199520620).

399041234 is a wasteful number, since it uses less digits than its factorization.

399041234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199520619.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 399041234 is about 19976.0164697569. The cubic root of 399041234 is about 736.2171413989.

The spelling of 399041234 in words is "three hundred ninety-nine million, forty-one thousand, two hundred thirty-four".