40958647 has 2 divisors, whose sum is σ = 40958648. Its totient is φ = 40958646.

The previous prime is 40958639. The next prime is 40958683. The reversal of 40958647 is 74685904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40958647 - 2³ = 40958639 is a prime.

It is a super-2 number, since 2×40958647² = 3355221528141218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40958447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20479323 + 20479324.

It is an arithmetic number, because the mean of its divisors is an integer number (20479324).

Almost surely, 2^40958647 is an apocalyptic number.

40958647 is a deficient number, since it is larger than the sum of its proper divisors (1).

40958647 is an equidigital number, since it uses as much as digits as its factorization.

40958647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 40958647 is about 6399.8942960021. The cubic root of 40958647 is about 344.7057548553.

The spelling of 40958647 in words is "forty million, nine hundred fifty-eight thousand, six hundred forty-seven".