427826919 has 8 divisors (see below), whose sum is σ = 614315632. Its totient is φ = 263278080.

The previous prime is 427826891. The next prime is 427826921. The reversal of 427826919 is 919628724.

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

It is not a de Polignac number, because 427826919 - 2²³ = 419438311 is a prime.

It is a super-2 number, since 2×427826919² = 366071745242065122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427826989) 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, 5484922 + ... + 5484999.

It is an arithmetic number, because the mean of its divisors is an integer number (76789454).

Almost surely, 2^427826919 is an apocalyptic number.

427826919 is a deficient number, since it is larger than the sum of its proper divisors (186488713).

427826919 is a wasteful number, since it uses less digits than its factorization.

427826919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10969937.

The product of its digits is 435456, while the sum is 48.

The square root of 427826919 is about 20683.9773496298. The cubic root of 427826919 is about 753.5106050087.

The spelling of 427826919 in words is "four hundred twenty-seven million, eight hundred twenty-six thousand, nine hundred nineteen".