13397949 has 6 divisors (see below), whose sum is σ = 19352606. Its totient is φ = 8931960.

The previous prime is 13397941. The next prime is 13397957. The reversal of 13397949 is 94979331.

13397949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13397941) and next prime (13397957).

It can be written as a sum of positive squares in only one way, i.e., 13089924 + 308025 = 3618^2 + 555^2 .

It is not a de Polignac number, because 13397949 - 2³ = 13397941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 744322 + ... + 744339.

Almost surely, 2^13397949 is an apocalyptic number.

It is an amenable number.

13397949 is a deficient number, since it is larger than the sum of its proper divisors (5954657).

13397949 is a wasteful number, since it uses less digits than its factorization.

13397949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488667 (or 1488664 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 13397949 is about 3660.3208875726. The cubic root of 13397949 is about 237.5086549016.

The spelling of 13397949 in words is "thirteen million, three hundred ninety-seven thousand, nine hundred forty-nine".