4192977949 has 2 divisors, whose sum is σ = 4192977950. Its totient is φ = 4192977948.

The previous prime is 4192977941. The next prime is 4192977961. The reversal of 4192977949 is 9497792914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3327559225 + 865418724 = 57685^2 + 29418^2 .

It is a cyclic number.

It is not a de Polignac number, because 4192977949 - 2³ = 4192977941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4192977941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096488974 + 2096488975.

It is an arithmetic number, because the mean of its divisors is an integer number (2096488975).

Almost surely, 2^4192977949 is an apocalyptic number.

It is an amenable number.

4192977949 is a deficient number, since it is larger than the sum of its proper divisors (1).

4192977949 is an equidigital number, since it uses as much as digits as its factorization.

4192977949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 61.

The square root of 4192977949 is about 64753.2080209158. The cubic root of 4192977949 is about 1612.5289715685.

The spelling of 4192977949 in words is "four billion, one hundred ninety-two million, nine hundred seventy-seven thousand, nine hundred forty-nine".