40705949 has 2 divisors, whose sum is σ = 40705950. Its totient is φ = 40705948.

The previous prime is 40705943. The next prime is 40705967. The reversal of 40705949 is 94950704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37027225 + 3678724 = 6085^2 + 1918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40705949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40705943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20352974 + 20352975.

It is an arithmetic number, because the mean of its divisors is an integer number (20352975).

Almost surely, 2^40705949 is an apocalyptic number.

It is an amenable number.

40705949 is a deficient number, since it is larger than the sum of its proper divisors (1).

40705949 is an equidigital number, since it uses as much as digits as its factorization.

40705949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 40705949 is about 6380.1213938294. The cubic root of 40705949 is about 343.9953944083.

The spelling of 40705949 in words is "forty million, seven hundred five thousand, nine hundred forty-nine".