40253979 has 8 divisors (see below), whose sum is σ = 56005632. Its totient is φ = 25669160.

The previous prime is 40253963. The next prime is 40253981. The reversal of 40253979 is 97935204.

40253979 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 40253979 - 2⁴ = 40253963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40253929) 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, 291627 + ... + 291764.

It is an arithmetic number, because the mean of its divisors is an integer number (7000704).

Almost surely, 2^40253979 is an apocalyptic number.

40253979 is a deficient number, since it is larger than the sum of its proper divisors (15751653).

40253979 is a wasteful number, since it uses less digits than its factorization.

40253979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583417.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 40253979 is about 6344.6023516057. The cubic root of 40253979 is about 342.7174927048.

The spelling of 40253979 in words is "forty million, two hundred fifty-three thousand, nine hundred seventy-nine".