39916801 has 2 divisors, whose sum is σ = 39916802. Its totient is φ = 39916800.

The previous prime is 39916787. The next prime is 39916817. The reversal of 39916801 is 10861993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35820225 + 4096576 = 5985^2 + 2024^2 .

It is an emirp because it is prime and its reverse (10861993) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39916801 is a prime.

It is a Chen prime.

It is equal to p_2428957 and since 39916801 and 2428957 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (39916831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19958400 + 19958401.

It is an arithmetic number, because the mean of its divisors is an integer number (19958401).

Almost surely, 2^39916801 is an apocalyptic number.

It is an amenable number.

39916801 is a deficient number, since it is larger than the sum of its proper divisors (1).

39916801 is an equidigital number, since it uses as much as digits as its factorization.

39916801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 39916801 is about 6317.9744380616. The cubic root of 39916801 is about 341.7579109335.

The spelling of 39916801 in words is "thirty-nine million, nine hundred sixteen thousand, eight hundred one".