40097860 has 48 divisors (see below), whose sum is σ = 92856960. Its totient is φ = 14423040.

The previous prime is 40097843. The next prime is 40097879. The reversal of 40097860 is 6879004.

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 15 ways as a sum of consecutive naturals, for example, 20401 + ... + 22279.

It is an arithmetic number, because the mean of its divisors is an integer number (1934520).

Almost surely, 2^40097860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40097860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46428480).

40097860 is an abundant number, since it is smaller than the sum of its proper divisors (52759100).

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

40097860 is a wasteful number, since it uses less digits than its factorization.

40097860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 40097860 is about 6332.2871065674. The cubic root of 40097860 is about 342.2738592803.

The spelling of 40097860 in words is "forty million, ninety-seven thousand, eight hundred sixty".