39520769 has 2 divisors, whose sum is σ = 39520770. Its totient is φ = 39520768.

The previous prime is 39520757. The next prime is 39520781. The reversal of 39520769 is 96702593.

It is a balanced prime because it is at equal distance from previous prime (39520757) and next prime (39520781).

It can be written as a sum of positive squares in only one way, i.e., 39438400 + 82369 = 6280^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 39520769 - 2¹⁶ = 39455233 is a prime.

It is a super-2 number, since 2×39520769² = 3123782364702722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39510769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19760384 + 19760385.

It is an arithmetic number, because the mean of its divisors is an integer number (19760385).

Almost surely, 2^39520769 is an apocalyptic number.

It is an amenable number.

39520769 is a deficient number, since it is larger than the sum of its proper divisors (1).

39520769 is an equidigital number, since it uses as much as digits as its factorization.

39520769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 39520769 is about 6286.5546207760. The cubic root of 39520769 is about 340.6239091961.

The spelling of 39520769 in words is "thirty-nine million, five hundred twenty thousand, seven hundred sixty-nine".