427824997 has 2 divisors, whose sum is σ = 427824998. Its totient is φ = 427824996.

The previous prime is 427824961. The next prime is 427825003. The reversal of 427824997 is 799428724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311487201 + 116337796 = 17649^2 + 10786^2 .

It is a cyclic number.

It is not a de Polignac number, because 427824997 - 2¹⁵ = 427792229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427824937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213912498 + 213912499.

It is an arithmetic number, because the mean of its divisors is an integer number (213912499).

Almost surely, 2^427824997 is an apocalyptic number.

It is an amenable number.

427824997 is a deficient number, since it is larger than the sum of its proper divisors (1).

427824997 is an equidigital number, since it uses as much as digits as its factorization.

427824997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 427824997 is about 20683.9308884941. The cubic root of 427824997 is about 753.5094766322.

The spelling of 427824997 in words is "four hundred twenty-seven million, eight hundred twenty-four thousand, nine hundred ninety-seven".