13905975 has 24 divisors (see below), whose sum is σ = 23292160. Its totient is φ = 7319520.

The previous prime is 13905959. The next prime is 13906001. The reversal of 13905975 is 57950931.

It is not a de Polignac number, because 13905975 - 2⁴ = 13905959 is a prime.

It is a super-2 number, since 2×13905975² = 386752281401250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4752 + ... + 7098.

Almost surely, 2^13905975 is an apocalyptic number.

13905975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13905975 is a deficient number, since it is larger than the sum of its proper divisors (9386185).

13905975 is a wasteful number, since it uses less digits than its factorization.

13905975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 42525, while the sum is 39.

The square root of 13905975 is about 3729.0716002780. The cubic root of 13905975 is about 240.4734577376.

The spelling of 13905975 in words is "thirteen million, nine hundred five thousand, nine hundred seventy-five".