47463781 has 2 divisors, whose sum is σ = 47463782. Its totient is φ = 47463780.

The previous prime is 47463751. The next prime is 47463791. The reversal of 47463781 is 18736474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45346756 + 2117025 = 6734^2 + 1455^2 .

It is a cyclic number.

It is not a de Polignac number, because 47463781 - 2¹³ = 47455589 is a prime.

It is a super-2 number, since 2×47463781² = 4505621013631922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47463721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23731890 + 23731891.

It is an arithmetic number, because the mean of its divisors is an integer number (23731891).

Almost surely, 2^47463781 is an apocalyptic number.

It is an amenable number.

47463781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47463781 is an equidigital number, since it uses as much as digits as its factorization.

47463781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 47463781 is about 6889.3962725336. The cubic root of 47463781 is about 362.0657496844.

The spelling of 47463781 in words is "forty-seven million, four hundred sixty-three thousand, seven hundred eighty-one".