13432649 has 4 divisors (see below), whose sum is σ = 13551636. Its totient is φ = 13313664.

The previous prime is 13432633. The next prime is 13432687. The reversal of 13432649 is 94623431.

13432649 = T₄₃₀ + T₄₃₁ + ... + T₅₄₂.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4020025 + 9412624 = 2005^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 13432649 - 2⁴ = 13432633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13435649) 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, 59324 + ... + 59549.

It is an arithmetic number, because the mean of its divisors is an integer number (3387909).

Almost surely, 2^13432649 is an apocalyptic number.

It is an amenable number.

13432649 is a deficient number, since it is larger than the sum of its proper divisors (118987).

13432649 is a wasteful number, since it uses less digits than its factorization.

13432649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118986.

The product of its digits is 15552, while the sum is 32.

The square root of 13432649 is about 3665.0578440183. The cubic root of 13432649 is about 237.7135232109.

The spelling of 13432649 in words is "thirteen million, four hundred thirty-two thousand, six hundred forty-nine".