39954659321 has 4 divisors (see below), whose sum is σ = 39956506212. Its totient is φ = 39952812432.

The previous prime is 39954659281. The next prime is 39954659413. The reversal of 39954659321 is 12395645993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30654757225 + 9299902096 = 175085^2 + 96436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39954659321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39954659221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890606 + ... + 934391.

It is an arithmetic number, because the mean of its divisors is an integer number (9989126553).

Almost surely, 2^39954659321 is an apocalyptic number.

It is an amenable number.

39954659321 is a deficient number, since it is larger than the sum of its proper divisors (1846891).

39954659321 is a wasteful number, since it uses less digits than its factorization.

39954659321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846890.

The product of its digits is 7873200, while the sum is 56.

The spelling of 39954659321 in words is "thirty-nine billion, nine hundred fifty-four million, six hundred fifty-nine thousand, three hundred twenty-one".