414857981 has 2 divisors, whose sum is σ = 414857982. Its totient is φ = 414857980.

The previous prime is 414857957. The next prime is 414857999. The reversal of 414857981 is 189758414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412455481 + 2402500 = 20309^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 414857981 - 2¹⁸ = 414595837 is a prime.

It is a super-2 number, since 2×414857981² = 344214288798792722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (414857581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207428990 + 207428991.

It is an arithmetic number, because the mean of its divisors is an integer number (207428991).

Almost surely, 2^414857981 is an apocalyptic number.

It is an amenable number.

414857981 is a deficient number, since it is larger than the sum of its proper divisors (1).

414857981 is an equidigital number, since it uses as much as digits as its factorization.

414857981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 47.

The square root of 414857981 is about 20368.0627699347. The cubic root of 414857981 is about 745.8184965502.

The spelling of 414857981 in words is "four hundred fourteen million, eight hundred fifty-seven thousand, nine hundred eighty-one".