40155973 has 8 divisors (see below), whose sum is σ = 47176416. Its totient is φ = 33697200.

The previous prime is 40155959. The next prime is 40155977. The reversal of 40155973 is 37955104.

40155973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40155973 - 2⁹ = 40155461 is a prime.

It is a super-2 number, since 2×40155973² = 3225004335153458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155977) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 140263 + ... + 140548.

It is an arithmetic number, because the mean of its divisors is an integer number (5897052).

Almost surely, 2^40155973 is an apocalyptic number.

It is an amenable number.

40155973 is a deficient number, since it is larger than the sum of its proper divisors (7020443).

40155973 is a wasteful number, since it uses less digits than its factorization.

40155973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280835.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 40155973 is about 6336.8740716539. The cubic root of 40155973 is about 342.4391296091.

The spelling of 40155973 in words is "forty million, one hundred fifty-five thousand, nine hundred seventy-three".