39649368 has 64 divisors (see below), whose sum is σ = 109278720. Its totient is φ = 11888000.

The previous prime is 39649367. The next prime is 39649369. The reversal of 39649368 is 86394693.

It is an interprime number because it is at equal distance from previous prime (39649367) and next prime (39649369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39649367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25921 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (1707480).

Almost surely, 2^39649368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39649368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54639360).

39649368 is an abundant number, since it is smaller than the sum of its proper divisors (69629352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39649368 is a wasteful number, since it uses less digits than its factorization.

39649368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608 (or 1604 counting only the distinct ones).

The product of its digits is 839808, while the sum is 48.

The square root of 39649368 is about 6296.7744123480. The cubic root of 39649368 is about 340.9929680384.

The spelling of 39649368 in words is "thirty-nine million, six hundred forty-nine thousand, three hundred sixty-eight".