87650449 has 2 divisors, whose sum is σ = 87650450. Its totient is φ = 87650448.

The previous prime is 87650429. The next prime is 87650471. The reversal of 87650449 is 94405678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53217025 + 34433424 = 7295^2 + 5868^2 .

It is a cyclic number.

It is not a de Polignac number, because 87650449 - 2⁵ = 87650417 is a prime.

It is not a weakly prime, because it can be changed into another prime (87650429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43825224 + 43825225.

It is an arithmetic number, because the mean of its divisors is an integer number (43825225).

Almost surely, 2^87650449 is an apocalyptic number.

It is an amenable number.

87650449 is a deficient number, since it is larger than the sum of its proper divisors (1).

87650449 is an equidigital number, since it uses as much as digits as its factorization.

87650449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 87650449 is about 9362.1818504022. The cubic root of 87650449 is about 444.2063014043.

The spelling of 87650449 in words is "eighty-seven million, six hundred fifty thousand, four hundred forty-nine".