427246591 has 4 divisors (see below), whose sum is σ = 436336992. Its totient is φ = 418156192.

The previous prime is 427246583. The next prime is 427246607. The reversal of 427246591 is 195642724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427246591 - 2³ = 427246583 is a prime.

It is a super-2 number, since 2×427246591² = 365079299042242562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427246291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545130 + ... + 4545223.

It is an arithmetic number, because the mean of its divisors is an integer number (109084248).

Almost surely, 2^427246591 is an apocalyptic number.

427246591 is a deficient number, since it is larger than the sum of its proper divisors (9090401).

427246591 is an equidigital number, since it uses as much as digits as its factorization.

427246591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9090400.

The product of its digits is 120960, while the sum is 40.

The square root of 427246591 is about 20669.9441460300. The cubic root of 427246591 is about 753.1697497465.

The spelling of 427246591 in words is "four hundred twenty-seven million, two hundred forty-six thousand, five hundred ninety-one".