427246247 has 4 divisors (see below), whose sum is σ = 441028416. Its totient is φ = 413464080.

The previous prime is 427246243. The next prime is 427246249. The reversal of 427246247 is 742642724.

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 427246247 - 2² = 427246243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427246247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427246243) 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, 6891038 + ... + 6891099.

It is an arithmetic number, because the mean of its divisors is an integer number (110257104).

Almost surely, 2^427246247 is an apocalyptic number.

427246247 is a deficient number, since it is larger than the sum of its proper divisors (13782169).

427246247 is a wasteful number, since it uses less digits than its factorization.

427246247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782168.

The product of its digits is 150528, while the sum is 38.

The square root of 427246247 is about 20669.9358247673. The cubic root of 427246247 is about 753.1695476068.

The spelling of 427246247 in words is "four hundred twenty-seven million, two hundred forty-six thousand, two hundred forty-seven".