427669386 has 16 divisors (see below), whose sum is σ = 864950400. Its totient is φ = 140954528.

The previous prime is 427669379. The next prime is 427669387. The reversal of 427669386 is 683966724.

It is a happy number.

It is a super-2 number, since 2×427669386² = 365802207443233992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427669387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399906 + ... + 400973.

It is an arithmetic number, because the mean of its divisors is an integer number (54059400).

Almost surely, 2^427669386 is an apocalyptic number.

427669386 is an abundant number, since it is smaller than the sum of its proper divisors (437281014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427669386 is a wasteful number, since it uses less digits than its factorization.

427669386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800973.

The product of its digits is 2612736, while the sum is 51.

The square root of 427669386 is about 20680.1689064669. The cubic root of 427669386 is about 753.4181086016.

The spelling of 427669386 in words is "four hundred twenty-seven million, six hundred sixty-nine thousand, three hundred eighty-six".