40079658 has 16 divisors (see below), whose sum is σ = 82326240. Its totient is φ = 12998736.

The previous prime is 40079657. The next prime is 40079671. The reversal of 40079658 is 85697004.

It is not an unprimeable number, because it can be changed into a prime (40079651) 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 in 7 ways as a sum of consecutive naturals, for example, 90048 + ... + 90491.

It is an arithmetic number, because the mean of its divisors is an integer number (5145390).

Almost surely, 2^40079658 is an apocalyptic number.

40079658 is an abundant number, since it is smaller than the sum of its proper divisors (42246582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40079658 is a wasteful number, since it uses less digits than its factorization.

40079658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180581.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 40079658 is about 6330.8497060031. The cubic root of 40079658 is about 342.2220609074. Note that the first 3 decimals are identical.

The spelling of 40079658 in words is "forty million, seventy-nine thousand, six hundred fifty-eight".