90002644009 has 8 divisors (see below), whose sum is σ = 95316787368. Its totient is φ = 84690708480.

The previous prime is 90002644003. The next prime is 90002644019. The reversal of 90002644009 is 90044620009.

It can be written as a sum of positive squares in 4 ways, for example, as 29844290025 + 60158353984 = 172755^2 + 245272^2 .

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 90002644009 - 2³ = 90002644001 is a prime.

It is a super-2 number, since 2×90002644009² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90002644001) 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, 467652 + ... + 631429.

It is an arithmetic number, because the mean of its divisors is an integer number (11914598421).

Almost surely, 2^90002644009 is an apocalyptic number.

It is an amenable number.

90002644009 is a deficient number, since it is larger than the sum of its proper divisors (5314143359).

90002644009 is a wasteful number, since it uses less digits than its factorization.

90002644009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103915.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 90002644009 in words is "ninety billion, two million, six hundred forty-four thousand, nine".