13989465 has 48 divisors (see below), whose sum is σ = 28080000. Its totient is φ = 6310656.

The previous prime is 13989457. The next prime is 13989473. The reversal of 13989465 is 56498931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13989457) and next prime (13989473).

It is not a de Polignac number, because 13989465 - 2³ = 13989457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13989465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27786 + ... + 28284.

It is an arithmetic number, because the mean of its divisors is an integer number (585000).

Almost surely, 2^13989465 is an apocalyptic number.

13989465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13989465 is an abundant number, since it is smaller than the sum of its proper divisors (14090535).

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

13989465 is a wasteful number, since it uses less digits than its factorization.

13989465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 603 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 13989465 is about 3740.2493232404. The cubic root of 13989465 is about 240.9537568454.

The spelling of 13989465 in words is "thirteen million, nine hundred eighty-nine thousand, four hundred sixty-five".