40627979 has 8 divisors (see below), whose sum is σ = 46744800. Its totient is φ = 34589376.

The previous prime is 40627969. The next prime is 40627981. The reversal of 40627979 is 97972604.

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 40627979 - 2⁴ = 40627963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40627969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18434 + ... + 20519.

It is an arithmetic number, because the mean of its divisors is an integer number (5843100).

Almost surely, 2^40627979 is an apocalyptic number.

40627979 is a deficient number, since it is larger than the sum of its proper divisors (6116821).

40627979 is a wasteful number, since it uses less digits than its factorization.

40627979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39109.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 40627979 is about 6374.0080796937. The cubic root of 40627979 is about 343.7756192917.

The spelling of 40627979 in words is "forty million, six hundred twenty-seven thousand, nine hundred seventy-nine".