40269947 has 2 divisors, whose sum is σ = 40269948. Its totient is φ = 40269946.

The previous prime is 40269883. The next prime is 40269959. The reversal of 40269947 is 74996204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40269947 - 2⁶ = 40269883 is a prime.

It is not a weakly prime, because it can be changed into another prime (40269997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20134973 + 20134974.

It is an arithmetic number, because the mean of its divisors is an integer number (20134974).

Almost surely, 2^40269947 is an apocalyptic number.

40269947 is a deficient number, since it is larger than the sum of its proper divisors (1).

40269947 is an equidigital number, since it uses as much as digits as its factorization.

40269947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 40269947 is about 6345.8606193329. The cubic root of 40269947 is about 342.7628032522.

The spelling of 40269947 in words is "forty million, two hundred sixty-nine thousand, nine hundred forty-seven".