13969774 has 16 divisors (see below), whose sum is σ = 25790688. Its totient is φ = 5526432.

The previous prime is 13969759. The next prime is 13969799. The reversal of 13969774 is 47796931.

It is a super-2 number, since 2×13969774² = 390309171222152, 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38197 + ... + 38560.

It is an arithmetic number, because the mean of its divisors is an integer number (1611918).

Almost surely, 2^13969774 is an apocalyptic number.

13969774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13969774 is a deficient number, since it is larger than the sum of its proper divisors (11820914).

13969774 is a wasteful number, since it uses less digits than its factorization.

13969774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76779.

The product of its digits is 285768, while the sum is 46.

The square root of 13969774 is about 3737.6160851537. The cubic root of 13969774 is about 240.8406515365.

The spelling of 13969774 in words is "thirteen million, nine hundred sixty-nine thousand, seven hundred seventy-four".