427481291 has 4 divisors (see below), whose sum is σ = 432631752. Its totient is φ = 422330832.

The previous prime is 427481287. The next prime is 427481339. The reversal of 427481291 is 192184724.

It is a happy number.

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 427481291 - 2² = 427481287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427481251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575106 + ... + 2575271.

It is an arithmetic number, because the mean of its divisors is an integer number (108157938).

Almost surely, 2^427481291 is an apocalyptic number.

427481291 is a deficient number, since it is larger than the sum of its proper divisors (5150461).

427481291 is an equidigital number, since it uses as much as digits as its factorization.

427481291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5150460.

The product of its digits is 32256, while the sum is 38.

The square root of 427481291 is about 20675.6206920131. The cubic root of 427481291 is about 753.3076377840.

The spelling of 427481291 in words is "four hundred twenty-seven million, four hundred eighty-one thousand, two hundred ninety-one".