1399890206 has 48 divisors (see below), whose sum is σ = 2533586688. Its totient is φ = 574797600.

The previous prime is 1399890203. The next prime is 1399890209. The reversal of 1399890206 is 6020989931.

It is an interprime number because it is at equal distance from previous prime (1399890203) and next prime (1399890209).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399890203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170741 + ... + 178751.

It is an arithmetic number, because the mean of its divisors is an integer number (52783056).

Almost surely, 2^1399890206 is an apocalyptic number.

1399890206 is a deficient number, since it is larger than the sum of its proper divisors (1133696482).

1399890206 is a wasteful number, since it uses less digits than its factorization.

1399890206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097 (or 8084 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 1399890206 is about 37415.1066549328. The cubic root of 1399890206 is about 1118.6596971898.

The spelling of 1399890206 in words is "one billion, three hundred ninety-nine million, eight hundred ninety thousand, two hundred six".