40523929 has 2 divisors, whose sum is σ = 40523930. Its totient is φ = 40523928.

The previous prime is 40523893. The next prime is 40523939. The reversal of 40523929 is 92932504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40195600 + 328329 = 6340^2 + 573^2 .

It is a cyclic number.

It is not a de Polignac number, because 40523929 - 2¹¹ = 40521881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40523894 and 40523903.

It is not a weakly prime, because it can be changed into another prime (40523939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20261964 + 20261965.

It is an arithmetic number, because the mean of its divisors is an integer number (20261965).

Almost surely, 2^40523929 is an apocalyptic number.

It is an amenable number.

40523929 is a deficient number, since it is larger than the sum of its proper divisors (1).

40523929 is an equidigital number, since it uses as much as digits as its factorization.

40523929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 40523929 is about 6365.8407928568. The cubic root of 40523929 is about 343.4818936898.

The spelling of 40523929 in words is "forty million, five hundred twenty-three thousand, nine hundred twenty-nine".