40489278 has 32 divisors (see below), whose sum is σ = 85570560. Its totient is φ = 12751200.

The previous prime is 40489243. The next prime is 40489289. The reversal of 40489278 is 87298404.

It is a super-3 number, since 3×40489278³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5703 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (2674080).

Almost surely, 2^40489278 is an apocalyptic number.

40489278 is an abundant number, since it is smaller than the sum of its proper divisors (45081282).

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

40489278 is a wasteful number, since it uses less digits than its factorization.

40489278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5032.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 40489278 is about 6363.1185750385. The cubic root of 40489278 is about 343.3839648416.

The spelling of 40489278 in words is "forty million, four hundred eighty-nine thousand, two hundred seventy-eight".