13439801 has 4 divisors (see below), whose sum is σ = 13590900. Its totient is φ = 13288704.

The previous prime is 13439773. The next prime is 13439807. The reversal of 13439801 is 10893431.

13439801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10893431 = 31 ⋅351401.

It can be written as a sum of positive squares in 2 ways, for example, as 1357225 + 12082576 = 1165^2 + 3476^2 .

It is a cyclic number.

It is not a de Polignac number, because 13439801 - 2⁶ = 13439737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13439807) 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, 75416 + ... + 75593.

It is an arithmetic number, because the mean of its divisors is an integer number (3397725).

Almost surely, 2^13439801 is an apocalyptic number.

13439801 is the 1640-th centered decagonal number.

It is an amenable number.

13439801 is a deficient number, since it is larger than the sum of its proper divisors (151099).

13439801 is an equidigital number, since it uses as much as digits as its factorization.

13439801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151098.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13439801 is about 3666.0334150141. The cubic root of 13439801 is about 237.7557046519.

The spelling of 13439801 in words is "thirteen million, four hundred thirty-nine thousand, eight hundred one".