427180391 has 4 divisors (see below), whose sum is σ = 466014984. Its totient is φ = 388345800.

The previous prime is 427180381. The next prime is 427180393. The reversal of 427180391 is 193081724.

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 427180391 - 2¹⁴ = 427164007 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 (427180393) 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, 19417280 + ... + 19417301.

It is an arithmetic number, because the mean of its divisors is an integer number (116503746).

Almost surely, 2^427180391 is an apocalyptic number.

427180391 is a deficient number, since it is larger than the sum of its proper divisors (38834593).

427180391 is a wasteful number, since it uses less digits than its factorization.

427180391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38834592.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 427180391 is about 20668.3427250469. The cubic root of 427180391 is about 753.1308476122.

The spelling of 427180391 in words is "four hundred twenty-seven million, one hundred eighty thousand, three hundred ninety-one".