39930447 has 8 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 26508440.

The previous prime is 39930439. The next prime is 39930463. The reversal of 39930447 is 74403993.

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 39930447 - 2³ = 39930439 is a prime.

It is a super-3 number, since 3×39930447³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39910447) 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, 27129 + ... + 28562.

It is an arithmetic number, because the mean of its divisors is an integer number (6683040).

Almost surely, 2^39930447 is an apocalyptic number.

39930447 is a deficient number, since it is larger than the sum of its proper divisors (13533873).

39930447 is a wasteful number, since it uses less digits than its factorization.

39930447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55933.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 39930447 is about 6319.0542805075. The cubic root of 39930447 is about 341.7968510707.

The spelling of 39930447 in words is "thirty-nine million, nine hundred thirty thousand, four hundred forty-seven".