427324397 has 2 divisors, whose sum is σ = 427324398. Its totient is φ = 427324396.

The previous prime is 427324379. The next prime is 427324451. The reversal of 427324397 is 793423724.

Together with previous prime (427324379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280696516 + 146627881 = 16754^2 + 12109^2 .

It is a cyclic number.

It is not a de Polignac number, because 427324397 - 2²⁰ = 426275821 is a prime.

It is a super-2 number, since 2×427324397² = 365212280542827218, 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 (427324697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213662198 + 213662199.

It is an arithmetic number, because the mean of its divisors is an integer number (213662199).

Almost surely, 2^427324397 is an apocalyptic number.

It is an amenable number.

427324397 is a deficient number, since it is larger than the sum of its proper divisors (1).

427324397 is an equidigital number, since it uses as much as digits as its factorization.

427324397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 41.

The square root of 427324397 is about 20671.8261650973. The cubic root of 427324397 is about 753.2154669583.

The spelling of 427324397 in words is "four hundred twenty-seven million, three hundred twenty-four thousand, three hundred ninety-seven".