549417091940 has 24 divisors (see below), whose sum is σ = 1153794189240. Its totient is φ = 219763351808.

The previous prime is 549417091921. The next prime is 549417091963. The reversal of 549417091940 is 49190714945.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9053903104 + 540363188836 = 95152^2 + 735094^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350296 + ... + 1709424.

It is an arithmetic number, because the mean of its divisors is an integer number (48074757885).

Almost surely, 2^549417091940 is an apocalyptic number.

It is an amenable number.

549417091940 is an abundant number, since it is smaller than the sum of its proper divisors (604377097300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549417091940 is a wasteful number, since it uses less digits than its factorization.

549417091940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435631 (or 435629 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 549417091940 in words is "five hundred forty-nine billion, four hundred seventeen million, ninety-one thousand, nine hundred forty".