5649739 has 2 divisors, whose sum is σ = 5649740. Its totient is φ = 5649738.

The previous prime is 5649733. The next prime is 5649757. The reversal of 5649739 is 9379465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5649739 - 2¹³ = 5641547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5649695 and 5649704.

It is not a weakly prime, because it can be changed into another prime (5649733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824869 + 2824870.

It is an arithmetic number, because the mean of its divisors is an integer number (2824870).

Almost surely, 2^5649739 is an apocalyptic number.

5649739 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649739 is an equidigital number, since it uses as much as digits as its factorization.

5649739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 5649739 is about 2376.9179624043. The cubic root of 5649739 is about 178.1050068460.

The spelling of 5649739 in words is "five million, six hundred forty-nine thousand, seven hundred thirty-nine".