39897344 has 18 divisors (see below), whose sum is σ = 79639350. Its totient is φ = 19948544.

The previous prime is 39897343. The next prime is 39897349. The reversal of 39897344 is 44379893.

It can be written as a sum of positive squares in only one way, i.e., 36966400 + 2930944 = 6080^2 + 1712^2 .

It is not an unprimeable number, because it can be changed into a prime (39897343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77669 + ... + 78180.

Almost surely, 2^39897344 is an apocalyptic number.

It is an amenable number.

39897344 is a deficient number, since it is larger than the sum of its proper divisors (39742006).

39897344 is an equidigital number, since it uses as much as digits as its factorization.

39897344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155865 (or 155851 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 39897344 is about 6316.4344372438. The cubic root of 39897344 is about 341.7023732132.

The spelling of 39897344 in words is "thirty-nine million, eight hundred ninety-seven thousand, three hundred forty-four".