461780399 has 2 divisors, whose sum is σ = 461780400. Its totient is φ = 461780398.

The previous prime is 461780393. The next prime is 461780437. The reversal of 461780399 is 993087164.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 461780399 - 2²⁴ = 445003183 is a prime.

It is a super-2 number, since 2×461780399² = 426482273801198402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461780393) 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, 230890199 + 230890200.

It is an arithmetic number, because the mean of its divisors is an integer number (230890200).

Almost surely, 2^461780399 is an apocalyptic number.

461780399 is a deficient number, since it is larger than the sum of its proper divisors (1).

461780399 is an equidigital number, since it uses as much as digits as its factorization.

461780399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 461780399 is about 21489.0762714455. The cubic root of 461780399 is about 772.9389002280.

The spelling of 461780399 in words is "four hundred sixty-one million, seven hundred eighty thousand, three hundred ninety-nine".