39868740 has 192 divisors, whose sum is σ = 135717120. Its totient is φ = 9676800.

The previous prime is 39868733. The next prime is 39868789. The reversal of 39868740 is 4786893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 394690 + ... + 394790.

It is an arithmetic number, because the mean of its divisors is an integer number (706860).

Almost surely, 2^39868740 is an apocalyptic number.

39868740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39868740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67858560).

39868740 is an abundant number, since it is smaller than the sum of its proper divisors (95848380).

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

39868740 is a wasteful number, since it uses less digits than its factorization.

39868740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 39868740 is about 6314.1697791555. The cubic root of 39868740 is about 341.6206936623.

The spelling of 39868740 in words is "thirty-nine million, eight hundred sixty-eight thousand, seven hundred forty".