40296978 has 12 divisors (see below), whose sum is σ = 87310158. Its totient is φ = 13432320.

The previous prime is 40296961. The next prime is 40297003. The reversal of 40296978 is 87969204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35247969 + 5049009 = 5937^2 + 2247^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119343 + ... + 1119378.

Almost surely, 2^40296978 is an apocalyptic number.

40296978 is an abundant number, since it is smaller than the sum of its proper divisors (47013180).

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

40296978 is a wasteful number, since it uses less digits than its factorization.

40296978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238729 (or 2238726 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 40296978 is about 6347.9900756066. The cubic root of 40296978 is about 342.8394787030.

The spelling of 40296978 in words is "forty million, two hundred ninety-six thousand, nine hundred seventy-eight".