13990829 has 4 divisors (see below), whose sum is σ = 14024640. Its totient is φ = 13957020.

The previous prime is 13990807. The next prime is 13990841. The reversal of 13990829 is 92809931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92809931 = 1861 ⋅49871.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13990829 is a prime.

It is a super-2 number, since 2×13990829² = 391486592214482, 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 (13990849) 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, 16277 + ... + 17114.

It is an arithmetic number, because the mean of its divisors is an integer number (3506160).

Almost surely, 2^13990829 is an apocalyptic number.

It is an amenable number.

13990829 is a deficient number, since it is larger than the sum of its proper divisors (33811).

13990829 is an equidigital number, since it uses as much as digits as its factorization.

13990829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33810.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 13990829 is about 3740.4316595816. The cubic root of 13990829 is about 240.9615877440.

The spelling of 13990829 in words is "thirteen million, nine hundred ninety thousand, eight hundred twenty-nine".