40308988 has 6 divisors (see below), whose sum is σ = 70540736. Its totient is φ = 20154492.

The previous prime is 40308979. The next prime is 40309001. The reversal of 40308988 is 88980304.

40308988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40308988.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5038620 + ... + 5038627.

Almost surely, 2^40308988 is an apocalyptic number.

It is an amenable number.

40308988 is a deficient number, since it is larger than the sum of its proper divisors (30231748).

40308988 is a wasteful number, since it uses less digits than its factorization.

40308988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077251 (or 10077249 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 40308988 is about 6348.9359738463. The cubic root of 40308988 is about 342.8735349636.

The spelling of 40308988 in words is "forty million, three hundred eight thousand, nine hundred eighty-eight".