40980749 has 2 divisors, whose sum is σ = 40980750. Its totient is φ = 40980748.

The previous prime is 40980721. The next prime is 40980767. The reversal of 40980749 is 94708904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26677225 + 14303524 = 5165^2 + 3782^2 .

It is a cyclic number.

It is not a de Polignac number, because 40980749 - 2¹² = 40976653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40980949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20490374 + 20490375.

It is an arithmetic number, because the mean of its divisors is an integer number (20490375).

Almost surely, 2^40980749 is an apocalyptic number.

It is an amenable number.

40980749 is a deficient number, since it is larger than the sum of its proper divisors (1).

40980749 is an equidigital number, since it uses as much as digits as its factorization.

40980749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40980749 is about 6401.6208103886. The cubic root of 40980749 is about 344.7677467843.

The spelling of 40980749 in words is "forty million, nine hundred eighty thousand, seven hundred forty-nine".