462780391 has 2 divisors, whose sum is σ = 462780392. Its totient is φ = 462780390.

The previous prime is 462780389. The next prime is 462780403. The reversal of 462780391 is 193087264.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 462780391 - 2¹ = 462780389 is a prime.

It is a super-2 number, since 2×462780391² = 428331380588225762, which contains 22 as substring.

Together with 462780389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (462780691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 231390195 + 231390196.

It is an arithmetic number, because the mean of its divisors is an integer number (231390196).

Almost surely, 2^462780391 is an apocalyptic number.

462780391 is a deficient number, since it is larger than the sum of its proper divisors (1).

462780391 is an equidigital number, since it uses as much as digits as its factorization.

462780391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 462780391 is about 21512.3311382100. The cubic root of 462780391 is about 773.4964346869.

The spelling of 462780391 in words is "four hundred sixty-two million, seven hundred eighty thousand, three hundred ninety-one".