49430729 has 2 divisors, whose sum is σ = 49430730. Its totient is φ = 49430728.

The previous prime is 49430681. The next prime is 49430741. The reversal of 49430729 is 92703494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30525625 + 18905104 = 5525^2 + 4348^2 .

It is a cyclic number.

It is not a de Polignac number, because 49430729 - 2¹⁶ = 49365193 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 49430692 and 49430701.

It is not a weakly prime, because it can be changed into another prime (49490729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24715364 + 24715365.

It is an arithmetic number, because the mean of its divisors is an integer number (24715365).

Almost surely, 2^49430729 is an apocalyptic number.

It is an amenable number.

49430729 is a deficient number, since it is larger than the sum of its proper divisors (1).

49430729 is an equidigital number, since it uses as much as digits as its factorization.

49430729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 49430729 is about 7030.6990406360. The cubic root of 49430729 is about 366.9996683715. Note that the first 3 decimals are identical.

The spelling of 49430729 in words is "forty-nine million, four hundred thirty thousand, seven hundred twenty-nine".