40988977 has 4 divisors (see below), whose sum is σ = 42402420. Its totient is φ = 39575536.

The previous prime is 40988957. The next prime is 40988993. The reversal of 40988977 is 77988904.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32251041 + 8737936 = 5679^2 + 2956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40988977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40988917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706678 + ... + 706735.

It is an arithmetic number, because the mean of its divisors is an integer number (10600605).

Almost surely, 2^40988977 is an apocalyptic number.

It is an amenable number.

40988977 is a deficient number, since it is larger than the sum of its proper divisors (1413443).

40988977 is a wasteful number, since it uses less digits than its factorization.

40988977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413442.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 40988977 is about 6402.2634278824. The cubic root of 40988977 is about 344.7908190745.

It can be divided in two parts, 4098897 and 7, that added together give a palindrome (4098904).

The spelling of 40988977 in words is "forty million, nine hundred eighty-eight thousand, nine hundred seventy-seven".