40000590 has 48 divisors (see below), whose sum is σ = 118860768. Its totient is φ = 9142848.

The previous prime is 40000579. The next prime is 40000591. The reversal of 40000590 is 9500004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31117 + ... + 32376.

It is an arithmetic number, because the mean of its divisors is an integer number (2476266).

Almost surely, 2^40000590 is an apocalyptic number.

40000590 is an abundant number, since it is smaller than the sum of its proper divisors (78860178).

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

40000590 is a wasteful number, since it uses less digits than its factorization.

40000590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63513 (or 63510 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 40000590 is about 6324.6019637602. The cubic root of 40000590 is about 341.9968708034.

Adding to 40000590 its reverse (9500004), we get a palindrome (49500594).

The spelling of 40000590 in words is "forty million, five hundred ninety", and thus it is an aban number.