13959469 has 8 divisors (see below), whose sum is σ = 14504760. Its totient is φ = 13418496.

The previous prime is 13959467. The next prime is 13959493. The reversal of 13959469 is 96495931.

It can be written as a sum of positive squares in 4 ways, for example, as 2365444 + 11594025 = 1538^2 + 3405^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13959469 - 2¹ = 13959467 is a prime.

It is a super-2 number, since 2×13959469² = 389733549523922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13959461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6517 + ... + 8389.

It is an arithmetic number, because the mean of its divisors is an integer number (1813095).

Almost surely, 2^13959469 is an apocalyptic number.

It is an amenable number.

13959469 is a deficient number, since it is larger than the sum of its proper divisors (545291).

13959469 is a wasteful number, since it uses less digits than its factorization.

13959469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159.

The product of its digits is 262440, while the sum is 46.

The square root of 13959469 is about 3736.2372783323. The cubic root of 13959469 is about 240.7814171394.

It can be divided in two parts, 13959 and 469, that multiplied together give a triangular number (6546771 = T₃₆₁₈).

The spelling of 13959469 in words is "thirteen million, nine hundred fifty-nine thousand, four hundred sixty-nine".