464321881 has 2 divisors, whose sum is σ = 464321882. Its totient is φ = 464321880.

The previous prime is 464321873. The next prime is 464321887. The reversal of 464321881 is 188123464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272250000 + 192071881 = 16500^2 + 13859^2 .

It is a cyclic number.

It is not a de Polignac number, because 464321881 - 2³ = 464321873 is a prime.

It is a super-2 number, since 2×464321881² = 431189618350756322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 464321881.

It is not a weakly prime, because it can be changed into another prime (464321887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232160940 + 232160941.

It is an arithmetic number, because the mean of its divisors is an integer number (232160941).

Almost surely, 2^464321881 is an apocalyptic number.

It is an amenable number.

464321881 is a deficient number, since it is larger than the sum of its proper divisors (1).

464321881 is an equidigital number, since it uses as much as digits as its factorization.

464321881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 464321881 is about 21548.1294083732. The cubic root of 464321881 is about 774.3543042237.

The spelling of 464321881 in words is "four hundred sixty-four million, three hundred twenty-one thousand, eight hundred eighty-one".