40878877 has 4 divisors (see below), whose sum is σ = 44023420. Its totient is φ = 37734336.

The previous prime is 40878833. The next prime is 40878881. The reversal of 40878877 is 77887804.

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 8491396 + 32387481 = 2914^2 + 5691^2 .

It is a cyclic number.

It is not a de Polignac number, because 40878877 - 2¹⁵ = 40846109 is a prime.

It is a super-2 number, since 2×40878877² = 3342165169562258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40878877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40878577) 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, 1572252 + ... + 1572277.

It is an arithmetic number, because the mean of its divisors is an integer number (11005855).

Almost surely, 2^40878877 is an apocalyptic number.

It is an amenable number.

40878877 is a deficient number, since it is larger than the sum of its proper divisors (3144543).

40878877 is a wasteful number, since it uses less digits than its factorization.

40878877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144542.

The product of its (nonzero) digits is 702464, while the sum is 49.

The square root of 40878877 is about 6393.6591244764. The cubic root of 40878877 is about 344.4818294220.

The spelling of 40878877 in words is "forty million, eight hundred seventy-eight thousand, eight hundred seventy-seven".