49999489 has 2 divisors, whose sum is σ = 49999490. Its totient is φ = 49999488.

The previous prime is 49999471. The next prime is 49999529. The reversal of 49999489 is 98499994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49914225 + 85264 = 7065^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 49999489 - 2⁷ = 49999361 is a prime.

It is a super-2 number, since 2×49999489² = 4999897800522242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49999409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999744 + 24999745.

It is an arithmetic number, because the mean of its divisors is an integer number (24999745).

Almost surely, 2^49999489 is an apocalyptic number.

It is an amenable number.

49999489 is a deficient number, since it is larger than the sum of its proper divisors (1).

49999489 is an equidigital number, since it uses as much as digits as its factorization.

49999489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 61.

The square root of 49999489 is about 7071.0316786166. The cubic root of 49999489 is about 368.4018948330.

The spelling of 49999489 in words is "forty-nine million, nine hundred ninety-nine thousand, four hundred eighty-nine".