427379181 has 4 divisors (see below), whose sum is σ = 569838912. Its totient is φ = 284919452.

The previous prime is 427379171. The next prime is 427379287. The reversal of 427379181 is 181973724.

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 a cyclic number.

It is not a de Polignac number, because 427379181 - 2⁷ = 427379053 is a prime.

It is a super-2 number, since 2×427379181² = 365305928704461522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427379171) 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, 71229861 + ... + 71229866.

It is an arithmetic number, because the mean of its divisors is an integer number (142459728).

Almost surely, 2^427379181 is an apocalyptic number.

It is an amenable number.

427379181 is a deficient number, since it is larger than the sum of its proper divisors (142459731).

427379181 is a wasteful number, since it uses less digits than its factorization.

427379181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142459730.

The product of its digits is 84672, while the sum is 42.

The square root of 427379181 is about 20673.1512111724. The cubic root of 427379181 is about 753.2476535852.

The spelling of 427379181 in words is "four hundred twenty-seven million, three hundred seventy-nine thousand, one hundred eighty-one".