469411981 has 2 divisors, whose sum is σ = 469411982. Its totient is φ = 469411980.

The previous prime is 469411963. The next prime is 469411997. The reversal of 469411981 is 189114964.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401200900 + 68211081 = 20030^2 + 8259^2 .

It is a cyclic number.

It is not a de Polignac number, because 469411981 - 2⁵ = 469411949 is a prime.

It is a super-2 number, since 2×469411981² = 440695215812688722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (469411961) 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 as a sum of consecutive naturals, namely, 234705990 + 234705991.

It is an arithmetic number, because the mean of its divisors is an integer number (234705991).

Almost surely, 2^469411981 is an apocalyptic number.

It is an amenable number.

469411981 is a deficient number, since it is larger than the sum of its proper divisors (1).

469411981 is an equidigital number, since it uses as much as digits as its factorization.

469411981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 469411981 is about 21665.9174973044. The cubic root of 469411981 is about 777.1736307298.

The spelling of 469411981 in words is "four hundred sixty-nine million, four hundred eleven thousand, nine hundred eighty-one".