39521121 has 8 divisors (see below), whose sum is σ = 55468320. Its totient is φ = 24960672.

The previous prime is 39521117. The next prime is 39521123. The reversal of 39521121 is 12112593.

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

It is not a de Polignac number, because 39521121 - 2² = 39521117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39521091 and 39521100.

It is not an unprimeable number, because it can be changed into a prime (39521123) 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, 346620 + ... + 346733.

It is an arithmetic number, because the mean of its divisors is an integer number (6933540).

Almost surely, 2^39521121 is an apocalyptic number.

It is an amenable number.

39521121 is a deficient number, since it is larger than the sum of its proper divisors (15947199).

39521121 is a wasteful number, since it uses less digits than its factorization.

39521121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693375.

The product of its digits is 540, while the sum is 24.

The square root of 39521121 is about 6286.5826169708. The cubic root of 39521121 is about 340.6249204724.

The spelling of 39521121 in words is "thirty-nine million, five hundred twenty-one thousand, one hundred twenty-one".