40979773 has 2 divisors, whose sum is σ = 40979774. Its totient is φ = 40979772.

The previous prime is 40979761. The next prime is 40979777. The reversal of 40979773 is 37797904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40934404 + 45369 = 6398^2 + 213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40979773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40979777) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20489886 + 20489887.

It is an arithmetic number, because the mean of its divisors is an integer number (20489887).

Almost surely, 2^40979773 is an apocalyptic number.

It is an amenable number.

40979773 is a deficient number, since it is larger than the sum of its proper divisors (1).

40979773 is an equidigital number, since it uses as much as digits as its factorization.

40979773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 40979773 is about 6401.5445792402. The cubic root of 40979773 is about 344.7650097594.

The spelling of 40979773 in words is "forty million, nine hundred seventy-nine thousand, seven hundred seventy-three".