412813781 has 4 divisors (see below), whose sum is σ = 412904064. Its totient is φ = 412723500.

The previous prime is 412813777. The next prime is 412813859. The reversal of 412813781 is 187318214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 412813781 - 2² = 412813777 is a prime.

It is a super-2 number, since 2×412813781² = 340830435567031922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412813721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37895 + ... + 47556.

It is an arithmetic number, because the mean of its divisors is an integer number (103226016).

Almost surely, 2^412813781 is an apocalyptic number.

It is an amenable number.

412813781 is a deficient number, since it is larger than the sum of its proper divisors (90283).

412813781 is an equidigital number, since it uses as much as digits as its factorization.

412813781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90282.

The product of its digits is 10752, while the sum is 35.

The square root of 412813781 is about 20317.8192973557. The cubic root of 412813781 is about 744.5914797061.

The spelling of 412813781 in words is "four hundred twelve million, eight hundred thirteen thousand, seven hundred eighty-one".