39745722 has 16 divisors (see below), whose sum is σ = 80279712. Its totient is φ = 13117200.

The previous prime is 39745721. The next prime is 39745781. The reversal of 39745722 is 22754793.

It is not an unprimeable number, because it can be changed into a prime (39745721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32188 + ... + 33399.

It is an arithmetic number, because the mean of its divisors is an integer number (5017482).

Almost surely, 2^39745722 is an apocalyptic number.

39745722 is an abundant number, since it is smaller than the sum of its proper divisors (40533990).

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

39745722 is a wasteful number, since it uses less digits than its factorization.

39745722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65693.

The product of its digits is 105840, while the sum is 39.

The square root of 39745722 is about 6304.4208298622. The cubic root of 39745722 is about 341.2689661935.

The spelling of 39745722 in words is "thirty-nine million, seven hundred forty-five thousand, seven hundred twenty-two".