40055958 has 20 divisors (see below), whose sum is σ = 89755380. Its totient is φ = 13351932.

The previous prime is 40055957. The next prime is 40055959. The reversal of 40055958 is 85955004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40055957) and next prime (40055959).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40055957) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 123468 + ... + 123791.

It is an arithmetic number, because the mean of its divisors is an integer number (4487769).

Almost surely, 2^40055958 is an apocalyptic number.

40055958 is an abundant number, since it is smaller than the sum of its proper divisors (49699422).

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

40055958 is a wasteful number, since it uses less digits than its factorization.

40055958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247273 (or 247264 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 40055958 is about 6328.9776425581. The cubic root of 40055958 is about 342.1545930825.

The spelling of 40055958 in words is "forty million, fifty-five thousand, nine hundred fifty-eight".