49951789 has 2 divisors, whose sum is σ = 49951790. Its totient is φ = 49951788.

The previous prime is 49951771. The next prime is 49951793. The reversal of 49951789 is 98715994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38962564 + 10989225 = 6242^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 49951789 - 2¹⁹ = 49427501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49961789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24975894 + 24975895.

It is an arithmetic number, because the mean of its divisors is an integer number (24975895).

Almost surely, 2^49951789 is an apocalyptic number.

It is an amenable number.

49951789 is a deficient number, since it is larger than the sum of its proper divisors (1).

49951789 is an equidigital number, since it uses as much as digits as its factorization.

49951789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 52.

The square root of 49951789 is about 7067.6579572019. The cubic root of 49951789 is about 368.2847045584.

The spelling of 49951789 in words is "forty-nine million, nine hundred fifty-one thousand, seven hundred eighty-nine".