40958686 has 4 divisors (see below), whose sum is σ = 61438032. Its totient is φ = 20479342.

The previous prime is 40958683. The next prime is 40958707. The reversal of 40958686 is 68685904.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40958686² = 3355227917693192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40958683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10239670 + ... + 10239673.

It is an arithmetic number, because the mean of its divisors is an integer number (15359508).

Almost surely, 2^40958686 is an apocalyptic number.

40958686 is a deficient number, since it is larger than the sum of its proper divisors (20479346).

40958686 is a wasteful number, since it uses less digits than its factorization.

40958686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20479345.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 40958686 is about 6399.8973429267. The cubic root of 40958686 is about 344.7058642626.

It can be divided in two parts, 409 and 58686, that added together give a palindrome (59095).

The spelling of 40958686 in words is "forty million, nine hundred fifty-eight thousand, six hundred eighty-six".