39495649 has 2 divisors, whose sum is σ = 39495650. Its totient is φ = 39495648.

The previous prime is 39495637. The next prime is 39495671. The reversal of 39495649 is 94659493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24324624 + 15171025 = 4932^2 + 3895^2 .

It is a cyclic number.

It is not a de Polignac number, because 39495649 - 2¹³ = 39487457 is a prime.

It is a super-3 number, since 3×39495649³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (39495689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19747824 + 19747825.

It is an arithmetic number, because the mean of its divisors is an integer number (19747825).

Almost surely, 2^39495649 is an apocalyptic number.

It is an amenable number.

39495649 is a deficient number, since it is larger than the sum of its proper divisors (1).

39495649 is an equidigital number, since it uses as much as digits as its factorization.

39495649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 39495649 is about 6284.5563884812. The cubic root of 39495649 is about 340.5517253264.

The spelling of 39495649 in words is "thirty-nine million, four hundred ninety-five thousand, six hundred forty-nine".