40789877 has 2 divisors, whose sum is σ = 40789878. Its totient is φ = 40789876.

The previous prime is 40789849. The next prime is 40789901. The reversal of 40789877 is 77898704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21771556 + 19018321 = 4666^2 + 4361^2 .

It is a cyclic number.

It is not a de Polignac number, because 40789877 - 2²⁰ = 39741301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40780877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20394938 + 20394939.

It is an arithmetic number, because the mean of its divisors is an integer number (20394939).

Almost surely, 2^40789877 is an apocalyptic number.

It is an amenable number.

40789877 is a deficient number, since it is larger than the sum of its proper divisors (1).

40789877 is an equidigital number, since it uses as much as digits as its factorization.

40789877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 40789877 is about 6386.6953113484. The cubic root of 40789877 is about 344.2316500154.

The spelling of 40789877 in words is "forty million, seven hundred eighty-nine thousand, eight hundred seventy-seven".