1399605238 has 32 divisors (see below), whose sum is σ = 2176709760. Its totient is φ = 674593920.

The previous prime is 1399605209. The next prime is 1399605239. The reversal of 1399605238 is 8325069931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399605239) 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, 3324268 + ... + 3324688.

It is an arithmetic number, because the mean of its divisors is an integer number (68022180).

Almost surely, 2^1399605238 is an apocalyptic number.

1399605238 is a deficient number, since it is larger than the sum of its proper divisors (777104522).

1399605238 is a wasteful number, since it uses less digits than its factorization.

1399605238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 1399605238 is about 37411.2982667001. The cubic root of 1399605238 is about 1118.5837855579.

The spelling of 1399605238 in words is "one billion, three hundred ninety-nine million, six hundred five thousand, two hundred thirty-eight".