39901541 has 2 divisors, whose sum is σ = 39901542. Its totient is φ = 39901540.

The previous prime is 39901531. The next prime is 39901579. The reversal of 39901541 is 14510993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33756100 + 6145441 = 5810^2 + 2479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39901541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39901498 and 39901507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39901531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19950770 + 19950771.

It is an arithmetic number, because the mean of its divisors is an integer number (19950771).

Almost surely, 2^39901541 is an apocalyptic number.

It is an amenable number.

39901541 is a deficient number, since it is larger than the sum of its proper divisors (1).

39901541 is an equidigital number, since it uses as much as digits as its factorization.

39901541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 39901541 is about 6316.7666570802. The cubic root of 39901541 is about 341.7143545837.

The spelling of 39901541 in words is "thirty-nine million, nine hundred one thousand, five hundred forty-one".