39164969 has 2 divisors, whose sum is σ = 39164970. Its totient is φ = 39164968.

The previous prime is 39164941. The next prime is 39164971. The reversal of 39164969 is 96946193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 16000000 = 4813^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 39164969 - 2¹² = 39160873 is a prime.

It is a super-2 number, since 2×39164969² = 3067789593541922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 39164971, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (39164269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19582484 + 19582485.

It is an arithmetic number, because the mean of its divisors is an integer number (19582485).

Almost surely, 2^39164969 is an apocalyptic number.

It is an amenable number.

39164969 is a deficient number, since it is larger than the sum of its proper divisors (1).

39164969 is an equidigital number, since it uses as much as digits as its factorization.

39164969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 47.

The square root of 39164969 is about 6258.1921510928. The cubic root of 39164969 is about 339.5986295977.

The spelling of 39164969 in words is "thirty-nine million, one hundred sixty-four thousand, nine hundred sixty-nine".