49087817 has 2 divisors, whose sum is σ = 49087818. Its totient is φ = 49087816.

The previous prime is 49087793. The next prime is 49087847. The reversal of 49087817 is 71878094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35331136 + 13756681 = 5944^2 + 3709^2 .

It is a cyclic number.

It is not a de Polignac number, because 49087817 - 2⁸ = 49087561 is a prime.

It is a super-2 number, since 2×49087817² = 4819227555650978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49087847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24543908 + 24543909.

It is an arithmetic number, because the mean of its divisors is an integer number (24543909).

Almost surely, 2^49087817 is an apocalyptic number.

It is an amenable number.

49087817 is a deficient number, since it is larger than the sum of its proper divisors (1).

49087817 is an equidigital number, since it uses as much as digits as its factorization.

49087817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 49087817 is about 7006.2698349407. The cubic root of 49087817 is about 366.1490454704.

The spelling of 49087817 in words is "forty-nine million, eighty-seven thousand, eight hundred seventeen".