90246869 has 6 divisors (see below), whose sum is σ = 93467010. Its totient is φ = 87134096.

The previous prime is 90246857. The next prime is 90246881. The reversal of 90246869 is 96864209.

It is an interprime number because it is at equal distance from previous prime (90246857) and next prime (90246881).

It can be written as a sum of positive squares in 3 ways, for example, as 4906225 + 85340644 = 2215^2 + 9238^2 .

It is not a de Polignac number, because 90246869 - 2⁴ = 90246853 is a prime.

It is a super-2 number, since 2×90246869² = 16288994728606322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90243869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52814 + ... + 54495.

It is an arithmetic number, because the mean of its divisors is an integer number (15577835).

Almost surely, 2^90246869 is an apocalyptic number.

It is an amenable number.

90246869 is a deficient number, since it is larger than the sum of its proper divisors (3220141).

90246869 is a wasteful number, since it uses less digits than its factorization.

90246869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107367 (or 107338 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 90246869 is about 9499.8352090971. The cubic root of 90246869 is about 448.5498486950.

The spelling of 90246869 in words is "ninety million, two hundred forty-six thousand, eight hundred sixty-nine".