40361958 has 96 divisors (see below), whose sum is σ = 110440512. Its totient is φ = 10368000.

The previous prime is 40361953. The next prime is 40361983. The reversal of 40361958 is 85916304.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40361953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66858 + ... + 67458.

It is an arithmetic number, because the mean of its divisors is an integer number (1150422).

Almost surely, 2^40361958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40361958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55220256).

40361958 is an abundant number, since it is smaller than the sum of its proper divisors (70078554).

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

40361958 is a wasteful number, since it uses less digits than its factorization.

40361958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 40361958 is about 6353.1061694261. The cubic root of 40361958 is about 343.0236591443.

The spelling of 40361958 in words is "forty million, three hundred sixty-one thousand, nine hundred fifty-eight".