40789678 has 4 divisors (see below), whose sum is σ = 61184520. Its totient is φ = 20394838.

The previous prime is 40789669. The next prime is 40789703. The reversal of 40789678 is 87698704.

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

It is a super-3 number, since 3×40789678³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10197418 + ... + 10197421.

It is an arithmetic number, because the mean of its divisors is an integer number (15296130).

Almost surely, 2^40789678 is an apocalyptic number.

40789678 is a deficient number, since it is larger than the sum of its proper divisors (20394842).

40789678 is a wasteful number, since it uses less digits than its factorization.

40789678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20394841.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 40789678 is about 6386.6797320674. The cubic root of 40789678 is about 344.2310902179.

The spelling of 40789678 in words is "forty million, seven hundred eighty-nine thousand, six hundred seventy-eight".