13891464 has 48 divisors (see below), whose sum is σ = 38925900. Its totient is φ = 4470144.

The previous prime is 13891463. The next prime is 13891483. The reversal of 13891464 is 46419831.

It can be written as a sum of positive squares in 2 ways, for example, as 12659364 + 1232100 = 3558^2 + 1110^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13891463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1239 + ... + 5414.

Almost surely, 2^13891464 is an apocalyptic number.

It is an amenable number.

13891464 is an abundant number, since it is smaller than the sum of its proper divisors (25034436).

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

13891464 is a wasteful number, since it uses less digits than its factorization.

13891464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694 (or 6687 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 13891464 is about 3727.1254338967. The cubic root of 13891464 is about 240.3897832781.

The spelling of 13891464 in words is "thirteen million, eight hundred ninety-one thousand, four hundred sixty-four".