1399484973 has 4 divisors (see below), whose sum is σ = 1865979968. Its totient is φ = 932989980.

The previous prime is 1399484963. The next prime is 1399485007. The reversal of 1399484973 is 3794849931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3794849931 = 3 ⋅1264949977.

It is not a de Polignac number, because 1399484973 - 2⁹ = 1399484461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399484903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233247493 + ... + 233247498.

It is an arithmetic number, because the mean of its divisors is an integer number (466494992).

Almost surely, 2^1399484973 is an apocalyptic number.

It is an amenable number.

1399484973 is a deficient number, since it is larger than the sum of its proper divisors (466494995).

1399484973 is an equidigital number, since it uses as much as digits as its factorization.

1399484973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466494994.

The product of its digits is 5878656, while the sum is 57.

The square root of 1399484973 is about 37409.6908968786. The cubic root of 1399484973 is about 1118.5517454920.

The spelling of 1399484973 in words is "one billion, three hundred ninety-nine million, four hundred eighty-four thousand, nine hundred seventy-three".