1390416894 has 16 divisors (see below), whose sum is σ = 3089815440. Its totient is φ = 463472280.

The previous prime is 1390416889. The next prime is 1390416899. The reversal of 1390416894 is 4986140931.

It is an interprime number because it is at equal distance from previous prime (1390416889) and next prime (1390416899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390416899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12874177 + ... + 12874284.

It is an arithmetic number, because the mean of its divisors is an integer number (193113465).

Almost surely, 2^1390416894 is an apocalyptic number.

1390416894 is an abundant number, since it is smaller than the sum of its proper divisors (1699398546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390416894 is a wasteful number, since it uses less digits than its factorization.

1390416894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25748472 (or 25748466 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1390416894 is about 37288.2943294541. The cubic root of 1390416894 is about 1116.1305923024.

The spelling of 1390416894 in words is "one billion, three hundred ninety million, four hundred sixteen thousand, eight hundred ninety-four".