49669721 has 8 divisors (see below), whose sum is σ = 51865920. Its totient is φ = 47505808.

The previous prime is 49669649. The next prime is 49669759. The reversal of 49669721 is 12796694.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49669721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49669621) 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, 4901 + ... + 11106.

It is an arithmetic number, because the mean of its divisors is an integer number (6483240).

Almost surely, 2^49669721 is an apocalyptic number.

It is an amenable number.

49669721 is a deficient number, since it is larger than the sum of its proper divisors (2196199).

49669721 is a wasteful number, since it uses less digits than its factorization.

49669721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16143.

The product of its digits is 163296, while the sum is 44.

The square root of 49669721 is about 7047.6748648047. The cubic root of 49669721 is about 367.5901850334.

The spelling of 49669721 in words is "forty-nine million, six hundred sixty-nine thousand, seven hundred twenty-one".