90406840033 has 8 divisors (see below), whose sum is σ = 93751731008. Its totient is φ = 87109394544.

The previous prime is 90406840009. The next prime is 90406840067. The reversal of 90406840033 is 33004860409.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90406840033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90406839974 and 90406840001.

It is not an unprimeable number, because it can be changed into a prime (90406850033) 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, 11857491 + ... + 11865112.

It is an arithmetic number, because the mean of its divisors is an integer number (11718966376).

Almost surely, 2^90406840033 is an apocalyptic number.

It is an amenable number.

90406840033 is a deficient number, since it is larger than the sum of its proper divisors (3344890975).

90406840033 is a wasteful number, since it uses less digits than its factorization.

90406840033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23722743.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 90406840033 in words is "ninety billion, four hundred six million, eight hundred forty thousand, thirty-three".