1399250374 has 4 divisors (see below), whose sum is σ = 2098875564. Its totient is φ = 699625186.

The previous prime is 1399250341. The next prime is 1399250389. The reversal of 1399250374 is 4730529931.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1399250374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349812592 + ... + 349812595.

It is an arithmetic number, because the mean of its divisors is an integer number (524718891).

Almost surely, 2^1399250374 is an apocalyptic number.

1399250374 is a deficient number, since it is larger than the sum of its proper divisors (699625190).

1399250374 is an equidigital number, since it uses as much as digits as its factorization.

1399250374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699625189.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 1399250374 is about 37406.5552276603. Note that the first 3 decimals coincide. The cubic root of 1399250374 is about 1118.4892401680.

The spelling of 1399250374 in words is "one billion, three hundred ninety-nine million, two hundred fifty thousand, three hundred seventy-four".