90067849 has 2 divisors, whose sum is σ = 90067850. Its totient is φ = 90067848.

The previous prime is 90067841. The next prime is 90067877. The reversal of 90067849 is 94876009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74701449 + 15366400 = 8643^2 + 3920^2 .

It is a cyclic number.

It is not a de Polignac number, because 90067849 - 2³ = 90067841 is a prime.

It is a super-2 number, since 2×90067849² = 16224434846973602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90067841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45033924 + 45033925.

It is an arithmetic number, because the mean of its divisors is an integer number (45033925).

Almost surely, 2^90067849 is an apocalyptic number.

It is an amenable number.

90067849 is a deficient number, since it is larger than the sum of its proper divisors (1).

90067849 is an equidigital number, since it uses as much as digits as its factorization.

90067849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 90067849 is about 9490.4082630833. The cubic root of 90067849 is about 448.2530607501.

The spelling of 90067849 in words is "ninety million, sixty-seven thousand, eight hundred forty-nine".