47486981 has 2 divisors, whose sum is σ = 47486982. Its totient is φ = 47486980.

The previous prime is 47486969. The next prime is 47486983. The reversal of 47486981 is 18968474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34281025 + 13205956 = 5855^2 + 3634^2 .

It is a cyclic number.

It is not a de Polignac number, because 47486981 - 2¹⁰ = 47485957 is a prime.

It is a super-2 number, since 2×47486981² = 4510026728988722, which contains 22 as substring.

Together with 47486983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47486983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23743490 + 23743491.

It is an arithmetic number, because the mean of its divisors is an integer number (23743491).

Almost surely, 2^47486981 is an apocalyptic number.

It is an amenable number.

47486981 is a deficient number, since it is larger than the sum of its proper divisors (1).

47486981 is an equidigital number, since it uses as much as digits as its factorization.

47486981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 47486981 is about 6891.0798137883. The cubic root of 47486981 is about 362.1247319018.

The spelling of 47486981 in words is "forty-seven million, four hundred eighty-six thousand, nine hundred eighty-one".