40429783 has 2 divisors, whose sum is σ = 40429784. Its totient is φ = 40429782.

The previous prime is 40429771. The next prime is 40429787. The reversal of 40429783 is 38792404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40429783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40429787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20214891 + 20214892.

It is an arithmetic number, because the mean of its divisors is an integer number (20214892).

Almost surely, 2^40429783 is an apocalyptic number.

40429783 is a deficient number, since it is larger than the sum of its proper divisors (1).

40429783 is an equidigital number, since it uses as much as digits as its factorization.

40429783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 40429783 is about 6358.4418688858. The cubic root of 40429783 is about 343.2156927737.

The spelling of 40429783 in words is "forty million, four hundred twenty-nine thousand, seven hundred eighty-three".