4649139973 has 2 divisors, whose sum is σ = 4649139974. Its totient is φ = 4649139972.

The previous prime is 4649139931. The next prime is 4649140009. The reversal of 4649139973 is 3799319464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2976575364 + 1672564609 = 54558^2 + 40897^2 .

It is a cyclic number.

It is not a de Polignac number, because 4649139973 - 2²¹ = 4647042821 is a prime.

It is a super-2 number, since 2×4649139973² = 43229004977092881458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4649130973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2324569986 + 2324569987.

It is an arithmetic number, because the mean of its divisors is an integer number (2324569987).

Almost surely, 2^4649139973 is an apocalyptic number.

It is an amenable number.

4649139973 is a deficient number, since it is larger than the sum of its proper divisors (1).

4649139973 is an equidigital number, since it uses as much as digits as its factorization.

4649139973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 55.

The square root of 4649139973 is about 68184.6021694048. The cubic root of 4649139973 is about 1669.0046267033.

The spelling of 4649139973 in words is "four billion, six hundred forty-nine million, one hundred thirty-nine thousand, nine hundred seventy-three".