40158659 has 2 divisors, whose sum is σ = 40158660. Its totient is φ = 40158658.

The previous prime is 40158631. The next prime is 40158691. The reversal of 40158659 is 95685104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40158659 - 2²⁰ = 39110083 is a prime.

It is a super-2 number, since 2×40158659² = 3225435785356562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40158959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20079329 + 20079330.

It is an arithmetic number, because the mean of its divisors is an integer number (20079330).

Almost surely, 2^40158659 is an apocalyptic number.

40158659 is a deficient number, since it is larger than the sum of its proper divisors (1).

40158659 is an equidigital number, since it uses as much as digits as its factorization.

40158659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 40158659 is about 6337.0860022569. The cubic root of 40158659 is about 342.4467645961.

The spelling of 40158659 in words is "forty million, one hundred fifty-eight thousand, six hundred fifty-nine".