889779642 has 16 divisors (see below), whose sum is σ = 1797906432. Its totient is φ = 293535360.

The previous prime is 889779637. The next prime is 889779647. The reversal of 889779642 is 246977988.

It is an interprime number because it is at equal distance from previous prime (889779637) and next prime (889779647).

It is a super-3 number, since 3×889779642³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (889779647) 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, 763834 + ... + 764997.

It is an arithmetic number, because the mean of its divisors is an integer number (112369152).

Almost surely, 2^889779642 is an apocalyptic number.

889779642 is an abundant number, since it is smaller than the sum of its proper divisors (908126790).

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

889779642 is a wasteful number, since it uses less digits than its factorization.

889779642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528933.

The product of its digits is 12192768, while the sum is 60.

The square root of 889779642 is about 29829.1743432499. The cubic root of 889779642 is about 961.8207783890.

The spelling of 889779642 in words is "eight hundred eighty-nine million, seven hundred seventy-nine thousand, six hundred forty-two".