39868901 has 2 divisors, whose sum is σ = 39868902. Its totient is φ = 39868900.

The previous prime is 39868891. The next prime is 39868951. The reversal of 39868901 is 10986893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35988001 + 3880900 = 5999^2 + 1970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39868901 is a prime.

It is a super-3 number, since 3×39868901³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39868951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19934450 + 19934451.

It is an arithmetic number, because the mean of its divisors is an integer number (19934451).

Almost surely, 2^39868901 is an apocalyptic number.

It is an amenable number.

39868901 is a deficient number, since it is larger than the sum of its proper divisors (1).

39868901 is an equidigital number, since it uses as much as digits as its factorization.

39868901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 39868901 is about 6314.1825282454. The cubic root of 39868901 is about 341.6211535118.

The spelling of 39868901 in words is "thirty-nine million, eight hundred sixty-eight thousand, nine hundred one".