48429981 has 10 divisors (see below), whose sum is σ = 72346142. Its totient is φ = 32286600.

The previous prime is 48429977. The next prime is 48430001. The reversal of 48429981 is 18992484.

48429981 is a `hidden beast` number, since 484 + 2 + 99 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38564100 + 9865881 = 6210^2 + 3141^2 .

It is not a de Polignac number, because 48429981 - 2² = 48429977 is a prime.

It is a super-2 number, since 2×48429981² = 4690926119320722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48429961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 298870 + ... + 299031.

Almost surely, 2^48429981 is an apocalyptic number.

It is an amenable number.

48429981 is a deficient number, since it is larger than the sum of its proper divisors (23916161).

48429981 is an equidigital number, since it uses as much as digits as its factorization.

48429981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597913 (or 597904 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 48429981 is about 6959.1652516663. The cubic root of 48429981 is about 364.5060711279.

The spelling of 48429981 in words is "forty-eight million, four hundred twenty-nine thousand, nine hundred eighty-one".