49166389 has 2 divisors, whose sum is σ = 49166390. Its totient is φ = 49166388.

The previous prime is 49166347. The next prime is 49166437. The reversal of 49166389 is 98366194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31248100 + 17918289 = 5590^2 + 4233^2 .

It is a cyclic number.

It is not a de Polignac number, because 49166389 - 2⁹ = 49165877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49166189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24583194 + 24583195.

It is an arithmetic number, because the mean of its divisors is an integer number (24583195).

Almost surely, 2^49166389 is an apocalyptic number.

It is an amenable number.

49166389 is a deficient number, since it is larger than the sum of its proper divisors (1).

49166389 is an equidigital number, since it uses as much as digits as its factorization.

49166389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 49166389 is about 7011.8748562706. The cubic root of 49166389 is about 366.3442991236.

The spelling of 49166389 in words is "forty-nine million, one hundred sixty-six thousand, three hundred eighty-nine".