49729621 has 2 divisors, whose sum is σ = 49729622. Its totient is φ = 49729620.

The previous prime is 49729567. The next prime is 49729633. The reversal of 49729621 is 12692794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42380100 + 7349521 = 6510^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 49729621 - 2¹⁹ = 49205333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49729651) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24864810 + 24864811.

It is an arithmetic number, because the mean of its divisors is an integer number (24864811).

Almost surely, 2^49729621 is an apocalyptic number.

It is an amenable number.

49729621 is a deficient number, since it is larger than the sum of its proper divisors (1).

49729621 is an equidigital number, since it uses as much as digits as its factorization.

49729621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 49729621 is about 7051.9232128548. The cubic root of 49729621 is about 367.7378927738.

The spelling of 49729621 in words is "forty-nine million, seven hundred twenty-nine thousand, six hundred twenty-one".