13421969 has 8 divisors (see below), whose sum is σ = 14891040. Its totient is φ = 11994400.

The previous prime is 13421951. The next prime is 13421981. The reversal of 13421969 is 96912431.

13421969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13421969 - 2¹⁶ = 13356433 is a prime.

It is a super-2 number, since 2×13421969² = 360298503673922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421869) 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, 9692 + ... + 10989.

It is an arithmetic number, because the mean of its divisors is an integer number (1861380).

Almost surely, 2^13421969 is an apocalyptic number.

It is an amenable number.

13421969 is a deficient number, since it is larger than the sum of its proper divisors (1469071).

13421969 is a wasteful number, since it uses less digits than its factorization.

13421969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20751.

The product of its digits is 11664, while the sum is 35.

The square root of 13421969 is about 3663.6005513702. The cubic root of 13421969 is about 237.6505062645.

The spelling of 13421969 in words is "thirteen million, four hundred twenty-one thousand, nine hundred sixty-nine".