13399420 has 12 divisors (see below), whose sum is σ = 28138824. Its totient is φ = 5359760.

The previous prime is 13399387. The next prime is 13399423. The reversal of 13399420 is 2499331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13399423) 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, 334966 + ... + 335005.

It is an arithmetic number, because the mean of its divisors is an integer number (2344902).

Almost surely, 2^13399420 is an apocalyptic number.

13399420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13399420 is an abundant number, since it is smaller than the sum of its proper divisors (14739404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13399420 is a wasteful number, since it uses less digits than its factorization.

13399420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669980 (or 669978 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 13399420 is about 3660.5218207245. The cubic root of 13399420 is about 237.5173468401.

The spelling of 13399420 in words is "thirteen million, three hundred ninety-nine thousand, four hundred twenty".