1389463874 has 4 divisors (see below), whose sum is σ = 2084195814. Its totient is φ = 694731936.

The previous prime is 1389463871. The next prime is 1389463897. The reversal of 1389463874 is 4783649831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4783649831 = 2969 ⋅1611199.

It can be written as a sum of positive squares in only one way, i.e., 751143649 + 638320225 = 27407^2 + 25265^2 .

It is not an unprimeable number, because it can be changed into a prime (1389463871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347365967 + ... + 347365970.

Almost surely, 2^1389463874 is an apocalyptic number.

1389463874 is a deficient number, since it is larger than the sum of its proper divisors (694731940).

1389463874 is an equidigital number, since it uses as much as digits as its factorization.

1389463874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694731939.

The product of its digits is 3483648, while the sum is 53.

The square root of 1389463874 is about 37275.5130615261. The cubic root of 1389463874 is about 1115.8755278201.

The spelling of 1389463874 in words is "one billion, three hundred eighty-nine million, four hundred sixty-three thousand, eight hundred seventy-four".