1064939689 has 4 divisors (see below), whose sum is σ = 1161752400. Its totient is φ = 968126980.

The previous prime is 1064939669. The next prime is 1064939719. The reversal of 1064939689 is 9869394601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1064939689 - 2¹¹ = 1064937641 is a prime.

It is a super-2 number, since 2×1064939689² = 2268193082414833442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1064939639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48406339 + ... + 48406360.

It is an arithmetic number, because the mean of its divisors is an integer number (290438100).

Almost surely, 2^1064939689 is an apocalyptic number.

It is an amenable number.

1064939689 is a deficient number, since it is larger than the sum of its proper divisors (96812711).

1064939689 is an equidigital number, since it uses as much as digits as its factorization.

1064939689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96812710.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 1064939689 is about 32633.4136890396. The cubic root of 1064939689 is about 1021.1941956366.

The spelling of 1064939689 in words is "one billion, sixty-four million, nine hundred thirty-nine thousand, six hundred eighty-nine".