13945090 has 8 divisors (see below), whose sum is σ = 25101180. Its totient is φ = 5578032.

The previous prime is 13945037. The next prime is 13945091. The reversal of 13945090 is 9054931.

It can be written as a sum of positive squares in 2 ways, for example, as 13935289 + 9801 = 3733^2 + 99^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13945091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697245 + ... + 697264.

Almost surely, 2^13945090 is an apocalyptic number.

13945090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13945090 is a deficient number, since it is larger than the sum of its proper divisors (11156090).

13945090 is a wasteful number, since it uses less digits than its factorization.

13945090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394516.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 13945090 is about 3734.3125203978. The cubic root of 13945090 is about 240.6987161563.

The spelling of 13945090 in words is "thirteen million, nine hundred forty-five thousand, ninety".