40445190 has 64 divisors (see below), whose sum is σ = 108633600. Its totient is φ = 10707552.

The previous prime is 40445189. The next prime is 40445203. The reversal of 40445190 is 9154404.

It is a super-2 number, since 2×40445190² = 3271626788272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 43551 + ... + 44469.

It is an arithmetic number, because the mean of its divisors is an integer number (1697400).

Almost surely, 2^40445190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40445190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54316800).

40445190 is an abundant number, since it is smaller than the sum of its proper divisors (68188410).

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

40445190 is a wasteful number, since it uses less digits than its factorization.

40445190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40445190 is about 6359.6532924366. The cubic root of 40445190 is about 343.2592848340.

Adding to 40445190 its reverse (9154404), we get a palindrome (49599594).

The spelling of 40445190 in words is "forty million, four hundred forty-five thousand, one hundred ninety".