427927197 has 4 divisors (see below), whose sum is σ = 570569600. Its totient is φ = 285284796.

The previous prime is 427927187. The next prime is 427927211. The reversal of 427927197 is 791729724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 427927197 - 2²⁶ = 360818333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427927147) 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, 71321197 + ... + 71321202.

It is an arithmetic number, because the mean of its divisors is an integer number (142642400).

Almost surely, 2^427927197 is an apocalyptic number.

It is an amenable number.

427927197 is a deficient number, since it is larger than the sum of its proper divisors (142642403).

427927197 is a wasteful number, since it uses less digits than its factorization.

427927197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142642402.

The product of its digits is 444528, while the sum is 48.

The square root of 427927197 is about 20686.4012578312. The cubic root of 427927197 is about 753.5694719868.

The spelling of 427927197 in words is "four hundred twenty-seven million, nine hundred twenty-seven thousand, one hundred ninety-seven".