39840801 has 32 divisors (see below), whose sum is σ = 71328768. Its totient is φ = 19103040.

The previous prime is 39840799. The next prime is 39840817. The reversal of 39840801 is 10804893.

It is not a de Polignac number, because 39840801 - 2¹ = 39840799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39840821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3631 + ... + 9636.

It is an arithmetic number, because the mean of its divisors is an integer number (2229024).

Almost surely, 2^39840801 is an apocalyptic number.

It is an amenable number.

39840801 is a deficient number, since it is larger than the sum of its proper divisors (31487967).

39840801 is a wasteful number, since it uses less digits than its factorization.

39840801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13301.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 39840801 is about 6311.9569865455. The cubic root of 39840801 is about 341.5408753138.

The spelling of 39840801 in words is "thirty-nine million, eight hundred forty thousand, eight hundred one".