90007893 has 6 divisors (see below), whose sum is σ = 130011414. Its totient is φ = 60005256.

The previous prime is 90007871. The next prime is 90007919. The reversal of 90007893 is 39870009.

It can be written as a sum of positive squares in only one way, i.e., 85710564 + 4297329 = 9258^2 + 2073^2 .

It is not a de Polignac number, because 90007893 - 2⁶ = 90007829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90007193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5000430 + ... + 5000447.

It is an arithmetic number, because the mean of its divisors is an integer number (21668569).

Almost surely, 2^90007893 is an apocalyptic number.

It is an amenable number.

90007893 is a deficient number, since it is larger than the sum of its proper divisors (40003521).

90007893 is a wasteful number, since it uses less digits than its factorization.

90007893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000883 (or 10000880 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90007893 is about 9487.2489690110. The cubic root of 90007893 is about 448.1535749126.

The spelling of 90007893 in words is "ninety million, seven thousand, eight hundred ninety-three".