4945667309 has 4 divisors (see below), whose sum is σ = 5395273440. Its totient is φ = 4496061180.

The previous prime is 4945667297. The next prime is 4945667329. The reversal of 4945667309 is 9037665494.

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 a de Polignac number, because none of the positive numbers 2^k-4945667309 is a prime.

It is a super-2 number, since 2×4945667309² = 48919250262622602962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4945667329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224803049 + ... + 224803070.

It is an arithmetic number, because the mean of its divisors is an integer number (1348818360).

Almost surely, 2^4945667309 is an apocalyptic number.

It is an amenable number.

4945667309 is a deficient number, since it is larger than the sum of its proper divisors (449606131).

4945667309 is a wasteful number, since it uses less digits than its factorization.

4945667309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449606130.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The square root of 4945667309 is about 70325.4385624434. The cubic root of 4945667309 is about 1703.7595354002.

The spelling of 4945667309 in words is "four billion, nine hundred forty-five million, six hundred sixty-seven thousand, three hundred nine".