40391600 has 60 divisors (see below), whose sum is σ = 97676040. Its totient is φ = 16051200.

The previous prime is 40391579. The next prime is 40391621. The reversal of 40391600 is 619304.

It is an interprime number because it is at equal distance from previous prime (40391579) and next prime (40391621).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96191 + ... + 96609.

It is an arithmetic number, because the mean of its divisors is an integer number (1627934).

Almost surely, 2^40391600 is an apocalyptic number.

40391600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40391600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48838020).

40391600 is an abundant number, since it is smaller than the sum of its proper divisors (57284440).

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

40391600 is a wasteful number, since it uses less digits than its factorization.

40391600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 40391600 is about 6355.4386158628. The cubic root of 40391600 is about 343.1076112922.

The spelling of 40391600 in words is "forty million, three hundred ninety-one thousand, six hundred".