88138249 has 2 divisors, whose sum is σ = 88138250. Its totient is φ = 88138248.

The previous prime is 88138243. The next prime is 88138291. The reversal of 88138249 is 94283188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61512649 + 26625600 = 7843^2 + 5160^2 .

It is a cyclic number.

It is not a de Polignac number, because 88138249 - 2⁷ = 88138121 is a prime.

It is not a weakly prime, because it can be changed into another prime (88138243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44069124 + 44069125.

It is an arithmetic number, because the mean of its divisors is an integer number (44069125).

Almost surely, 2^88138249 is an apocalyptic number.

It is an amenable number.

88138249 is a deficient number, since it is larger than the sum of its proper divisors (1).

88138249 is an equidigital number, since it uses as much as digits as its factorization.

88138249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 43.

The square root of 88138249 is about 9388.1973243003. The cubic root of 88138249 is about 445.0288227765.

The spelling of 88138249 in words is "eighty-eight million, one hundred thirty-eight thousand, two hundred forty-nine".