39761989 has 2 divisors, whose sum is σ = 39761990. Its totient is φ = 39761988.

The previous prime is 39761959. The next prime is 39761993. The reversal of 39761989 is 98916793.

39761989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35497764 + 4264225 = 5958^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 39761989 - 2¹³ = 39753797 is a prime.

It is a super-2 number, since 2×39761989² = 3162031538472242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39761959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19880994 + 19880995.

It is an arithmetic number, because the mean of its divisors is an integer number (19880995).

Almost surely, 2^39761989 is an apocalyptic number.

It is an amenable number.

39761989 is a deficient number, since it is larger than the sum of its proper divisors (1).

39761989 is an equidigital number, since it uses as much as digits as its factorization.

39761989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 52.

The square root of 39761989 is about 6305.7108243242. The cubic root of 39761989 is about 341.3155176613.

The spelling of 39761989 in words is "thirty-nine million, seven hundred sixty-one thousand, nine hundred eighty-nine".