90091007 has 8 divisors (see below), whose sum is σ = 96267600. Its totient is φ = 84011904.

The previous prime is 90090997. The next prime is 90091013. The reversal of 90091007 is 70019009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90091007 - 2⁶ = 90090943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90091037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22457 + ... + 26162.

It is an arithmetic number, because the mean of its divisors is an integer number (12033450).

Almost surely, 2^90091007 is an apocalyptic number.

90091007 is a deficient number, since it is larger than the sum of its proper divisors (6176593).

90091007 is a wasteful number, since it uses less digits than its factorization.

90091007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48745.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 90091007 is about 9491.6282586288. The cubic root of 90091007 is about 448.2914753266.

The spelling of 90091007 in words is "ninety million, ninety-one thousand, seven".