461421997 has 2 divisors, whose sum is σ = 461421998. Its totient is φ = 461421996.

The previous prime is 461421991. The next prime is 461422009. The reversal of 461421997 is 799124164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374074281 + 87347716 = 19341^2 + 9346^2 .

It is a cyclic number.

It is not a de Polignac number, because 461421997 - 2¹⁹ = 460897709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461421991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230710998 + 230710999.

It is an arithmetic number, because the mean of its divisors is an integer number (230710999).

Almost surely, 2^461421997 is an apocalyptic number.

It is an amenable number.

461421997 is a deficient number, since it is larger than the sum of its proper divisors (1).

461421997 is an equidigital number, since it uses as much as digits as its factorization.

461421997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 461421997 is about 21480.7354855461. The cubic root of 461421997 is about 772.7388812378.

The spelling of 461421997 in words is "four hundred sixty-one million, four hundred twenty-one thousand, nine hundred ninety-seven".