427696819 has 8 divisors (see below), whose sum is σ = 468316080. Its totient is φ = 387367200.

The previous prime is 427696811. The next prime is 427696823. The reversal of 427696819 is 918696724.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427696819 - 2³ = 427696811 is a prime.

It is a super-2 number, since 2×427696819² = 365849137965437522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427696811) 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, 69312 + ... + 75229.

It is an arithmetic number, because the mean of its divisors is an integer number (58539510).

Almost surely, 2^427696819 is an apocalyptic number.

427696819 is a deficient number, since it is larger than the sum of its proper divisors (40619261).

427696819 is a wasteful number, since it uses less digits than its factorization.

427696819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144821.

The product of its digits is 1306368, while the sum is 52.

The square root of 427696819 is about 20680.8321641079. The cubic root of 427696819 is about 753.4342176785.

The spelling of 427696819 in words is "four hundred twenty-seven million, six hundred ninety-six thousand, eight hundred nineteen".