427089919 has 2 divisors, whose sum is σ = 427089920. Its totient is φ = 427089918.

The previous prime is 427089899. The next prime is 427090003. The reversal of 427089919 is 919980724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427089919 - 2⁷ = 427089791 is a prime.

It is a super-2 number, since 2×427089919² = 364811597822853122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427489919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213544959 + 213544960.

It is an arithmetic number, because the mean of its divisors is an integer number (213544960).

Almost surely, 2^427089919 is an apocalyptic number.

427089919 is a deficient number, since it is larger than the sum of its proper divisors (1).

427089919 is an equidigital number, since it uses as much as digits as its factorization.

427089919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 427089919 is about 20666.1539479411. The cubic root of 427089919 is about 753.0776756453.

The spelling of 427089919 in words is "four hundred twenty-seven million, eighty-nine thousand, nine hundred nineteen".