13880403 has 18 divisors (see below), whose sum is σ = 20879404. Its totient is φ = 9214884.

The previous prime is 13880371. The next prime is 13880407. The reversal of 13880403 is 30408831.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 13880403 - 2⁵ = 13880371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13880407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57958 + ... + 58196.

Almost surely, 2^13880403 is an apocalyptic number.

13880403 is a deficient number, since it is larger than the sum of its proper divisors (6999001).

13880403 is an frugal number, since it uses more digits than its factorization.

13880403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 13880403 is about 3725.6412870807. The cubic root of 13880403 is about 240.3259633325.

Multiplying 13880403 by its sum of digits (27), we get a square (374770881 = 19359²).

13880403 divided by its sum of digits (27) gives a square (514089 = 717²).

The spelling of 13880403 in words is "thirteen million, eight hundred eighty thousand, four hundred three".