464940781 has 2 divisors, whose sum is σ = 464940782. Its totient is φ = 464940780.

The previous prime is 464940743. The next prime is 464940793. The reversal of 464940781 is 187049464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460488681 + 4452100 = 21459^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 464940781 - 2²⁵ = 431386349 is a prime.

It is a super-2 number, since 2×464940781² = 432339859673779922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464940881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232470390 + 232470391.

It is an arithmetic number, because the mean of its divisors is an integer number (232470391).

Almost surely, 2^464940781 is an apocalyptic number.

It is an amenable number.

464940781 is a deficient number, since it is larger than the sum of its proper divisors (1).

464940781 is an equidigital number, since it uses as much as digits as its factorization.

464940781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 464940781 is about 21562.4855014444. The cubic root of 464940781 is about 774.6982000744.

The spelling of 464940781 in words is "four hundred sixty-four million, nine hundred forty thousand, seven hundred eighty-one".