427772431 has 2 divisors, whose sum is σ = 427772432. Its totient is φ = 427772430.

The previous prime is 427772383. The next prime is 427772437. The reversal of 427772431 is 134277724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427772431 - 2⁹ = 427771919 is a prime.

It is a super-2 number, since 2×427772431² = 365978505447299522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427772437) 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, 213886215 + 213886216.

It is an arithmetic number, because the mean of its divisors is an integer number (213886216).

Almost surely, 2^427772431 is an apocalyptic number.

427772431 is a deficient number, since it is larger than the sum of its proper divisors (1).

427772431 is an equidigital number, since it uses as much as digits as its factorization.

427772431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 37.

The square root of 427772431 is about 20682.6601528914. The cubic root of 427772431 is about 753.4786146350.

The spelling of 427772431 in words is "four hundred twenty-seven million, seven hundred seventy-two thousand, four hundred thirty-one".