87293449 has 2 divisors, whose sum is σ = 87293450. Its totient is φ = 87293448.

The previous prime is 87293411. The next prime is 87293477. The reversal of 87293449 is 94439278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53187849 + 34105600 = 7293^2 + 5840^2 .

It is a cyclic number.

It is not a de Polignac number, because 87293449 - 2⁹ = 87292937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87293399 and 87293408.

It is not a weakly prime, because it can be changed into another prime (87293149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43646724 + 43646725.

It is an arithmetic number, because the mean of its divisors is an integer number (43646725).

Almost surely, 2^87293449 is an apocalyptic number.

It is an amenable number.

87293449 is a deficient number, since it is larger than the sum of its proper divisors (1).

87293449 is an equidigital number, since it uses as much as digits as its factorization.

87293449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 87293449 is about 9343.0963283057. The cubic root of 87293449 is about 443.6023971431.

The spelling of 87293449 in words is "eighty-seven million, two hundred ninety-three thousand, four hundred forty-nine".