49431689 has 8 divisors (see below), whose sum is σ = 51347520. Its totient is φ = 47530000.

The previous prime is 49431677. The next prime is 49431719. The reversal of 49431689 is 98613494.

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 49431689 - 2⁸ = 49431433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49431619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3884 + ... + 10674.

It is an arithmetic number, because the mean of its divisors is an integer number (6418440).

Almost surely, 2^49431689 is an apocalyptic number.

It is an amenable number.

49431689 is a deficient number, since it is larger than the sum of its proper divisors (1915831).

49431689 is a wasteful number, since it uses less digits than its factorization.

49431689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071.

The product of its digits is 186624, while the sum is 44.

The square root of 49431689 is about 7030.7673123209. The cubic root of 49431689 is about 367.0020442041.

The spelling of 49431689 in words is "forty-nine million, four hundred thirty-one thousand, six hundred eighty-nine".