39840101 has 8 divisors (see below), whose sum is σ = 45654720. Its totient is φ = 34056288.

The previous prime is 39840037. The next prime is 39840103. The reversal of 39840101 is 10104893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39840101 - 2⁶ = 39840037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39840103) 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, 4856 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (5706840).

Almost surely, 2^39840101 is an apocalyptic number.

It is an amenable number.

39840101 is a deficient number, since it is larger than the sum of its proper divisors (5814619).

39840101 is a wasteful number, since it uses less digits than its factorization.

39840101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15403.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 39840101 is about 6311.9015359874. The cubic root of 39840101 is about 341.5388750193.

Adding to 39840101 its reverse (10104893), we get a palindrome (49944994).

The spelling of 39840101 in words is "thirty-nine million, eight hundred forty thousand, one hundred one".