49404721 has 8 divisors (see below), whose sum is σ = 51249440. Its totient is φ = 47591712.

The previous prime is 49404697. The next prime is 49404727. The reversal of 49404721 is 12740494.

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

It is not a de Polignac number, because 49404721 - 2⁹ = 49404209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49404727) 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, 4731 + ... + 11008.

It is an arithmetic number, because the mean of its divisors is an integer number (6406180).

Almost surely, 2^49404721 is an apocalyptic number.

It is an amenable number.

49404721 is a deficient number, since it is larger than the sum of its proper divisors (1844719).

49404721 is a wasteful number, since it uses less digits than its factorization.

49404721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15855.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 49404721 is about 7028.8491945695. The cubic root of 49404721 is about 366.9352914001.

The spelling of 49404721 in words is "forty-nine million, four hundred four thousand, seven hundred twenty-one".