399342045 has 8 divisors (see below), whose sum is σ = 638947296. Its totient is φ = 212982416.

The previous prime is 399342037. The next prime is 399342079. The reversal of 399342045 is 540243993.

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 399342045 - 2³ = 399342037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399341994 and 399342012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13311387 + ... + 13311416.

It is an arithmetic number, because the mean of its divisors is an integer number (79868412).

Almost surely, 2^399342045 is an apocalyptic number.

It is an amenable number.

399342045 is a deficient number, since it is larger than the sum of its proper divisors (239605251).

399342045 is a wasteful number, since it uses less digits than its factorization.

399342045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26622811.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 399342045 is about 19983.5443552939. The cubic root of 399342045 is about 736.4020901965.

The spelling of 399342045 in words is "three hundred ninety-nine million, three hundred forty-two thousand, forty-five".