40941390 has 128 divisors (see below), whose sum is σ = 122388480. Its totient is φ = 8553600.

The previous prime is 40941379. The next prime is 40941391. The reversal of 40941390 is 9314904.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40941391) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123525 + ... + 123855.

It is an arithmetic number, because the mean of its divisors is an integer number (956160).

Almost surely, 2^40941390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40941390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61194240).

40941390 is an abundant number, since it is smaller than the sum of its proper divisors (81447090).

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

40941390 is a wasteful number, since it uses less digits than its factorization.

40941390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 40941390 is about 6398.5459285685. The cubic root of 40941390 is about 344.6573367289.

The spelling of 40941390 in words is "forty million, nine hundred forty-one thousand, three hundred ninety".