13906445 has 24 divisors (see below), whose sum is σ = 20049408. Its totient is φ = 9223200.

The previous prime is 13906439. The next prime is 13906447. The reversal of 13906445 is 54460931.

It is not a de Polignac number, because 13906445 - 2¹⁶ = 13840909 is a prime.

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 (13906447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6680 + ... + 8510.

It is an arithmetic number, because the mean of its divisors is an integer number (835392).

Almost surely, 2^13906445 is an apocalyptic number.

It is an amenable number.

13906445 is a deficient number, since it is larger than the sum of its proper divisors (6142963).

13906445 is a wasteful number, since it uses less digits than its factorization.

13906445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 13906445 is about 3729.1346181118. The cubic root of 13906445 is about 240.4761669149.

The spelling of 13906445 in words is "thirteen million, nine hundred six thousand, four hundred forty-five".