13980749 has 8 divisors (see below), whose sum is σ = 14837760. Its totient is φ = 13127616.

The previous prime is 13980731. The next prime is 13980763. The reversal of 13980749 is 94708931.

It is a happy number.

13980749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13980749 - 2⁸ = 13980493 is a prime.

It is a super-2 number, since 2×13980749² = 390922685202002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13980779) 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, 10292 + ... + 11570.

It is an arithmetic number, because the mean of its divisors is an integer number (1854720).

Almost surely, 2^13980749 is an apocalyptic number.

It is an amenable number.

13980749 is a deficient number, since it is larger than the sum of its proper divisors (857011).

13980749 is a wasteful number, since it uses less digits than its factorization.

13980749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 13980749 is about 3739.0839787306. The cubic root of 13980749 is about 240.9037051516.

The spelling of 13980749 in words is "thirteen million, nine hundred eighty thousand, seven hundred forty-nine".