40488978 has 8 divisors (see below), whose sum is σ = 80977968. Its totient is φ = 13496324.

The previous prime is 40488961. The next prime is 40489003. The reversal of 40488978 is 87988404.

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

40488978 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374076 + ... + 3374087.

It is an arithmetic number, because the mean of its divisors is an integer number (10122246).

Almost surely, 2^40488978 is an apocalyptic number.

40488978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40488978 is a wasteful number, since it uses less digits than its factorization.

40488978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748168.

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 40488978 is about 6363.0950016482. The cubic root of 40488978 is about 343.3831167534.

The spelling of 40488978 in words is "forty million, four hundred eighty-eight thousand, nine hundred seventy-eight".