40070447 has 2 divisors, whose sum is σ = 40070448. Its totient is φ = 40070446.

The previous prime is 40070423. The next prime is 40070477. The reversal of 40070447 is 74407004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40070447 - 2²² = 35876143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40070477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20035223 + 20035224.

It is an arithmetic number, because the mean of its divisors is an integer number (20035224).

Almost surely, 2^40070447 is an apocalyptic number.

40070447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40070447 is an equidigital number, since it uses as much as digits as its factorization.

40070447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 40070447 is about 6330.1221947131. The cubic root of 40070447 is about 342.1958427120.

The spelling of 40070447 in words is "forty million, seventy thousand, four hundred forty-seven".