49836389 has 2 divisors, whose sum is σ = 49836390. Its totient is φ = 49836388.

The previous prime is 49836383. The next prime is 49836407. The reversal of 49836389 is 98363894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49815364 + 21025 = 7058^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 49836389 - 2²⁰ = 48787813 is a prime.

It is a Sophie Germain prime.

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

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49836383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24918194 + 24918195.

It is an arithmetic number, because the mean of its divisors is an integer number (24918195).

Almost surely, 2^49836389 is an apocalyptic number.

It is an amenable number.

49836389 is a deficient number, since it is larger than the sum of its proper divisors (1).

49836389 is an equidigital number, since it uses as much as digits as its factorization.

49836389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 49836389 is about 7059.4892874768. The cubic root of 49836389 is about 368.0008787195. Note that the first 3 decimals are identical.

The spelling of 49836389 in words is "forty-nine million, eight hundred thirty-six thousand, three hundred eighty-nine".