39472509 has 8 divisors (see below), whose sum is σ = 54444960. Its totient is φ = 25407536.

The previous prime is 39472427. The next prime is 39472529. The reversal of 39472509 is 90527493.

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

It is a cyclic number.

It is not a de Polignac number, because 39472509 - 2¹² = 39468413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39472529) 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, 226767 + ... + 226940.

It is an arithmetic number, because the mean of its divisors is an integer number (6805620).

Almost surely, 2^39472509 is an apocalyptic number.

It is an amenable number.

39472509 is a deficient number, since it is larger than the sum of its proper divisors (14972451).

39472509 is a wasteful number, since it uses less digits than its factorization.

39472509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453739.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 39472509 is about 6282.7150977901. The cubic root of 39472509 is about 340.4852040207.

The spelling of 39472509 in words is "thirty-nine million, four hundred seventy-two thousand, five hundred nine".