39549452641 has 8 divisors (see below), whose sum is σ = 43066555200. Its totient is φ = 36175905360.

The previous prime is 39549452599. The next prime is 39549452771. The reversal of 39549452641 is 14625494593.

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 39549452641 - 2²⁵ = 39515898209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39549452941) 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, 35888245 + ... + 35889346.

It is an arithmetic number, because the mean of its divisors is an integer number (5383319400).

Almost surely, 2^39549452641 is an apocalyptic number.

It is an amenable number.

39549452641 is a deficient number, since it is larger than the sum of its proper divisors (3517102559).

39549452641 is a wasteful number, since it uses less digits than its factorization.

39549452641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71777639.

The product of its digits is 4665600, while the sum is 52.

The spelling of 39549452641 in words is "thirty-nine billion, five hundred forty-nine million, four hundred fifty-two thousand, six hundred forty-one".