427765949 has 4 divisors (see below), whose sum is σ = 460671036. Its totient is φ = 394860864.

The previous prime is 427765927. The next prime is 427765973. The reversal of 427765949 is 949567724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31158724 + 396607225 = 5582^2 + 19915^2 .

It is a cyclic number.

It is not a de Polignac number, because 427765949 - 2⁸ = 427765693 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 427765949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427765909) 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, 16452524 + ... + 16452549.

It is an arithmetic number, because the mean of its divisors is an integer number (115167759).

Almost surely, 2^427765949 is an apocalyptic number.

It is an amenable number.

427765949 is a deficient number, since it is larger than the sum of its proper divisors (32905087).

427765949 is a wasteful number, since it uses less digits than its factorization.

427765949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32905086.

The product of its digits is 3810240, while the sum is 53.

The square root of 427765949 is about 20682.5034509848. The cubic root of 427765949 is about 753.4748088163.

The spelling of 427765949 in words is "four hundred twenty-seven million, seven hundred sixty-five thousand, nine hundred forty-nine".