40487958 has 64 divisors (see below), whose sum is σ = 107320320. Its totient is φ = 11062656.

The previous prime is 40487939. The next prime is 40487977. The reversal of 40487958 is 85978404.

It is an interprime number because it is at equal distance from previous prime (40487939) and next prime (40487977).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6366 + ... + 11022.

It is an arithmetic number, because the mean of its divisors is an integer number (1676880).

Almost surely, 2^40487958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40487958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53660160).

40487958 is an abundant number, since it is smaller than the sum of its proper divisors (66832362).

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

40487958 is a wasteful number, since it uses less digits than its factorization.

40487958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698 (or 4692 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 40487958 is about 6363.0148514678. The cubic root of 40487958 is about 343.3802332219.

The spelling of 40487958 in words is "forty million, four hundred eighty-seven thousand, nine hundred fifty-eight".