1064749739 has 4 divisors (see below), whose sum is σ = 1065693960. Its totient is φ = 1063805520.

The previous prime is 1064749717. The next prime is 1064749747. The reversal of 1064749739 is 9379474601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1064749739 is a prime.

It is a super-2 number, since 2×1064749739² = 2267384013401136242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1064749039) 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, 470417 + ... + 472674.

It is an arithmetic number, because the mean of its divisors is an integer number (266423490).

Almost surely, 2^1064749739 is an apocalyptic number.

1064749739 is a deficient number, since it is larger than the sum of its proper divisors (944221).

1064749739 is an equidigital number, since it uses as much as digits as its factorization.

1064749739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944220.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 1064749739 is about 32630.5031986943. The cubic root of 1064749739 is about 1021.1334762759.

The spelling of 1064749739 in words is "one billion, sixty-four million, seven hundred forty-nine thousand, seven hundred thirty-nine".