40890292073 has 4 divisors (see below), whose sum is σ = 41995435140. Its totient is φ = 39785149008.

The previous prime is 40890292067. The next prime is 40890292099. The reversal of 40890292073 is 37029209804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20069822224 + 20820469849 = 141668^2 + 144293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40890292073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40890292013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552571478 + ... + 552571551.

It is an arithmetic number, because the mean of its divisors is an integer number (10498858785).

Almost surely, 2^40890292073 is an apocalyptic number.

It is an amenable number.

40890292073 is a deficient number, since it is larger than the sum of its proper divisors (1105143067).

40890292073 is a wasteful number, since it uses less digits than its factorization.

40890292073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105143066.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 40890292073 in words is "forty billion, eight hundred ninety million, two hundred ninety-two thousand, seventy-three".