889496639 has 2 divisors, whose sum is σ = 889496640. Its totient is φ = 889496638.

The previous prime is 889496579. The next prime is 889496659. The reversal of 889496639 is 936694988.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 889496639 - 2⁸ = 889496383 is a prime.

It is a super-3 number, since 3×889496639³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889496659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444748319 + 444748320.

It is an arithmetic number, because the mean of its divisors is an integer number (444748320).

Almost surely, 2^889496639 is an apocalyptic number.

889496639 is a deficient number, since it is larger than the sum of its proper divisors (1).

889496639 is an equidigital number, since it uses as much as digits as its factorization.

889496639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20155392, while the sum is 62.

The square root of 889496639 is about 29824.4302376424. The cubic root of 889496639 is about 961.7187954499.

The spelling of 889496639 in words is "eight hundred eighty-nine million, four hundred ninety-six thousand, six hundred thirty-nine".