13903643 has 8 divisors (see below), whose sum is σ = 15036336. Its totient is φ = 12780000.

The previous prime is 13903621. The next prime is 13903651. The reversal of 13903643 is 34630931.

13903643 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 13903643 - 2¹² = 13899547 is a prime.

It is a super-2 number, since 2×13903643² = 386622577342898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13903613) 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, 1133 + ... + 5393.

It is an arithmetic number, because the mean of its divisors is an integer number (1879542).

Almost surely, 2^13903643 is an apocalyptic number.

13903643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13903643 is a deficient number, since it is larger than the sum of its proper divisors (1132693).

13903643 is a wasteful number, since it uses less digits than its factorization.

13903643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 13903643 is about 3728.7589088060. The cubic root of 13903643 is about 240.4600147044.

The spelling of 13903643 in words is "thirteen million, nine hundred three thousand, six hundred forty-three".