40101390 has 96 divisors (see below), whose sum is σ = 121507776. Its totient is φ = 8985600.

The previous prime is 40101389. The next prime is 40101409. The reversal of 40101390 is 9310104.

40101390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32790 + ... + 33990.

It is an arithmetic number, because the mean of its divisors is an integer number (1265706).

Almost surely, 2^40101390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40101390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60753888).

40101390 is an abundant number, since it is smaller than the sum of its proper divisors (81406386).

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

40101390 is a wasteful number, since it uses less digits than its factorization.

40101390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 40101390 is about 6332.5658306882. The cubic root of 40101390 is about 342.2839029690.

Adding to 40101390 its reverse (9310104), we get a palindrome (49411494).

The spelling of 40101390 in words is "forty million, one hundred one thousand, three hundred ninety".