40523069 has 2 divisors, whose sum is σ = 40523070. Its totient is φ = 40523068.

The previous prime is 40523057. The next prime is 40523081. The reversal of 40523069 is 96032504.

It is a balanced prime because it is at equal distance from previous prime (40523057) and next prime (40523081).

It can be written as a sum of positive squares in only one way, i.e., 29300569 + 11222500 = 5413^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 40523069 - 2²⁴ = 23745853 is a prime.

It is a super-2 number, since 2×40523069² = 3284238242357522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40523089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20261534 + 20261535.

It is an arithmetic number, because the mean of its divisors is an integer number (20261535).

Almost surely, 2^40523069 is an apocalyptic number.

It is an amenable number.

40523069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40523069 is an equidigital number, since it uses as much as digits as its factorization.

40523069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 40523069 is about 6365.7732444692. The cubic root of 40523069 is about 343.4794638784.

The spelling of 40523069 in words is "forty million, five hundred twenty-three thousand, sixty-nine".