39508969 has 8 divisors (see below), whose sum is σ = 42304680. Its totient is φ = 36765696.

The previous prime is 39508967. The next prime is 39508979. The reversal of 39508969 is 96980593.

It can be written as a sum of positive squares in 4 ways, for example, as 7155625 + 32353344 = 2675^2 + 5688^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39508969 - 2¹ = 39508967 is a prime.

It is a super-2 number, since 2×39508969² = 3121917262885922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39508967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11544 + ... + 14569.

It is an arithmetic number, because the mean of its divisors is an integer number (5288085).

Almost surely, 2^39508969 is an apocalyptic number.

It is an amenable number.

39508969 is a deficient number, since it is larger than the sum of its proper divisors (2795711).

39508969 is a wasteful number, since it uses less digits than its factorization.

39508969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26219.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 39508969 is about 6285.6160398166. The cubic root of 39508969 is about 340.5900049787.

The spelling of 39508969 in words is "thirty-nine million, five hundred eight thousand, nine hundred sixty-nine".