39481421 has 8 divisors (see below), whose sum is σ = 45447360. Its totient is φ = 33596928.

The previous prime is 39481417. The next prime is 39481427. The reversal of 39481421 is 12418493.

It is a happy number.

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 39481421 - 2² = 39481417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39481427) 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, 19316 + ... + 21261.

It is an arithmetic number, because the mean of its divisors is an integer number (5680920).

Almost surely, 2^39481421 is an apocalyptic number.

It is an amenable number.

39481421 is a deficient number, since it is larger than the sum of its proper divisors (5965939).

39481421 is a wasteful number, since it uses less digits than its factorization.

39481421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40723.

The product of its digits is 6912, while the sum is 32.

The square root of 39481421 is about 6283.4243052654. The cubic root of 39481421 is about 340.5108267125.

The spelling of 39481421 in words is "thirty-nine million, four hundred eighty-one thousand, four hundred twenty-one".