39560981 has 6 divisors (see below), whose sum is σ = 40422870. Its totient is φ = 38717096.

The previous prime is 39560957. The next prime is 39560999. The reversal of 39560981 is 18906593.

It can be written as a sum of positive squares in only one way, i.e., 32878756 + 6682225 = 5734^2 + 2585^2 .

It is not a de Polignac number, because 39560981 - 2¹⁴ = 39544597 is a prime.

It is a super-2 number, since 2×39560981² = 3130142435364722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39560951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6746 + ... + 11163.

It is an arithmetic number, because the mean of its divisors is an integer number (6737145).

Almost surely, 2^39560981 is an apocalyptic number.

It is an amenable number.

39560981 is a deficient number, since it is larger than the sum of its proper divisors (861889).

39560981 is an equidigital number, since it uses as much as digits as its factorization.

39560981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18003 (or 17956 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 39560981 is about 6289.7520618861. The cubic root of 39560981 is about 340.7393972127.

The spelling of 39560981 in words is "thirty-nine million, five hundred sixty thousand, nine hundred eighty-one".