13945390 has 8 divisors (see below), whose sum is σ = 25101720. Its totient is φ = 5578152.

The previous prime is 13945369. The next prime is 13945403. The reversal of 13945390 is 9354931.

13945390 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697260 + ... + 697279.

It is an arithmetic number, because the mean of its divisors is an integer number (3137715).

Almost surely, 2^13945390 is an apocalyptic number.

13945390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13945390 is a deficient number, since it is larger than the sum of its proper divisors (11156330).

13945390 is a wasteful number, since it uses less digits than its factorization.

13945390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394546.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 13945390 is about 3734.3526882179. The cubic root of 13945390 is about 240.7004421903.

The spelling of 13945390 in words is "thirteen million, nine hundred forty-five thousand, three hundred ninety".