40653929 has 2 divisors, whose sum is σ = 40653930. Its totient is φ = 40653928.

The previous prime is 40653923. The next prime is 40653941. The reversal of 40653929 is 92935604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40195600 + 458329 = 6340^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 40653929 - 2²⁰ = 39605353 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40653892 and 40653901.

It is not a weakly prime, because it can be changed into another prime (40653923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20326964 + 20326965.

It is an arithmetic number, because the mean of its divisors is an integer number (20326965).

Almost surely, 2^40653929 is an apocalyptic number.

It is an amenable number.

40653929 is a deficient number, since it is larger than the sum of its proper divisors (1).

40653929 is an equidigital number, since it uses as much as digits as its factorization.

40653929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 40653929 is about 6376.0433655991. The cubic root of 40653929 is about 343.8487961095.

The spelling of 40653929 in words is "forty million, six hundred fifty-three thousand, nine hundred twenty-nine".