40977140 has 48 divisors (see below), whose sum is σ = 91736064. Its totient is φ = 15321600.

The previous prime is 40977127. The next prime is 40977143. The reversal of 40977140 is 4177904.

It is a junction number, because it is equal to n+sod(n) for n = 40977097 and 40977106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40977143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64625 + ... + 65255.

It is an arithmetic number, because the mean of its divisors is an integer number (1911168).

Almost surely, 2^40977140 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 40977140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45868032).

40977140 is an abundant number, since it is smaller than the sum of its proper divisors (50758924).

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

40977140 is a wasteful number, since it uses less digits than its factorization.

40977140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 40977140 is about 6401.3389224443. The cubic root of 40977140 is about 344.7576257449.

The spelling of 40977140 in words is "forty million, nine hundred seventy-seven thousand, one hundred forty".