39771121 has 8 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 36627600.

The previous prime is 39771113. The next prime is 39771131. The reversal of 39771121 is 12117793.

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 39771121 - 2³ = 39771113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39771101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2796 + ... + 9346.

It is an arithmetic number, because the mean of its divisors is an integer number (5366088).

Almost surely, 2^39771121 is an apocalyptic number.

It is an amenable number.

39771121 is a deficient number, since it is larger than the sum of its proper divisors (3157583).

39771121 is a wasteful number, since it uses less digits than its factorization.

39771121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031.

The product of its digits is 2646, while the sum is 31.

The square root of 39771121 is about 6306.4348882709. The cubic root of 39771121 is about 341.3416452503.

The spelling of 39771121 in words is "thirty-nine million, seven hundred seventy-one thousand, one hundred twenty-one".