427951963 has 2 divisors, whose sum is σ = 427951964. Its totient is φ = 427951962.

The previous prime is 427951939. The next prime is 427952009. The reversal of 427951963 is 369159724.

It is a happy number.

It is an a-pointer prime, because the next prime (427952009) can be obtained adding 427951963 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427951963 is a prime.

It is not a weakly prime, because it can be changed into another prime (427951903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213975981 + 213975982.

It is an arithmetic number, because the mean of its divisors is an integer number (213975982).

Almost surely, 2^427951963 is an apocalyptic number.

427951963 is a deficient number, since it is larger than the sum of its proper divisors (1).

427951963 is an equidigital number, since it uses as much as digits as its factorization.

427951963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 427951963 is about 20686.9998549814. Note that the first 3 decimals coincide. The cubic root of 427951963 is about 753.5840091493.

The spelling of 427951963 in words is "four hundred twenty-seven million, nine hundred fifty-one thousand, nine hundred sixty-three".