40977539 has 2 divisors, whose sum is σ = 40977540. Its totient is φ = 40977538.

The previous prime is 40977527. The next prime is 40977557. The reversal of 40977539 is 93577904.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40977539 - 2⁴ = 40977523 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40977539.

It is not a weakly prime, because it can be changed into another prime (40977589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20488769 + 20488770.

It is an arithmetic number, because the mean of its divisors is an integer number (20488770).

Almost surely, 2^40977539 is an apocalyptic number.

40977539 is a deficient number, since it is larger than the sum of its proper divisors (1).

40977539 is an equidigital number, since it uses as much as digits as its factorization.

40977539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 40977539 is about 6401.3700877234. The cubic root of 40977539 is about 344.7587447253.

The spelling of 40977539 in words is "forty million, nine hundred seventy-seven thousand, five hundred thirty-nine".