40077958 has 4 divisors (see below), whose sum is σ = 60116940. Its totient is φ = 20038978.

The previous prime is 40077953. The next prime is 40077991. The reversal of 40077958 is 85977004.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 40077958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40077953) by changing a digit.

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 as a sum of consecutive naturals, namely, 10019488 + ... + 10019491.

It is an arithmetic number, because the mean of its divisors is an integer number (15029235).

Almost surely, 2^40077958 is an apocalyptic number.

40077958 is a deficient number, since it is larger than the sum of its proper divisors (20038982).

40077958 is a wasteful number, since it uses less digits than its factorization.

40077958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20038981.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 40077958 is about 6330.7154414015. The cubic root of 40077958 is about 342.2172223288.

The spelling of 40077958 in words is "forty million, seventy-seven thousand, nine hundred fifty-eight".