47348981 has 8 divisors (see below), whose sum is σ = 48601944. Its totient is φ = 46109440.

The previous prime is 47348971. The next prime is 47349017. The reversal of 47348981 is 18984374.

It can be written as a sum of positive squares in 4 ways, for example, as 24700900 + 22648081 = 4970^2 + 4759^2 .

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 47348981 - 2¹⁰ = 47347957 is a prime.

It is a super-2 number, since 2×47348981² = 4483852003476722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47348971) 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, 4001 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (6075243).

Almost surely, 2^47348981 is an apocalyptic number.

It is an amenable number.

47348981 is a deficient number, since it is larger than the sum of its proper divisors (1252963).

47348981 is a wasteful number, since it uses less digits than its factorization.

47348981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its digits is 193536, while the sum is 44.

The square root of 47348981 is about 6881.0595841048. The cubic root of 47348981 is about 361.7736061923.

The spelling of 47348981 in words is "forty-seven million, three hundred forty-eight thousand, nine hundred eighty-one".