40970387 has 2 divisors, whose sum is σ = 40970388. Its totient is φ = 40970386.

The previous prime is 40970353. The next prime is 40970393. The reversal of 40970387 is 78307904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40970387 - 2¹² = 40966291 is a prime.

It is a super-2 number, since 2×40970387² = 3357145221859538, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40970387.

It is not a weakly prime, because it can be changed into another prime (40970087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20485193 + 20485194.

It is an arithmetic number, because the mean of its divisors is an integer number (20485194).

Almost surely, 2^40970387 is an apocalyptic number.

40970387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40970387 is an equidigital number, since it uses as much as digits as its factorization.

40970387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 40970387 is about 6400.8114329357. The cubic root of 40970387 is about 344.7386861105.

The spelling of 40970387 in words is "forty million, nine hundred seventy thousand, three hundred eighty-seven".