1399238206 has 4 divisors (see below), whose sum is σ = 2098857312. Its totient is φ = 699619102.

The previous prime is 1399238179. The next prime is 1399238209. The reversal of 1399238206 is 6028329931.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399238209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349809550 + ... + 349809553.

It is an arithmetic number, because the mean of its divisors is an integer number (524714328).

Almost surely, 2^1399238206 is an apocalyptic number.

1399238206 is a deficient number, since it is larger than the sum of its proper divisors (699619106).

1399238206 is an equidigital number, since it uses as much as digits as its factorization.

1399238206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699619105.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1399238206 is about 37406.3925820173. The cubic root of 1399238206 is about 1118.4859979994.

The spelling of 1399238206 in words is "one billion, three hundred ninety-nine million, two hundred thirty-eight thousand, two hundred six".