40674209 has 2 divisors, whose sum is σ = 40674210. Its totient is φ = 40674208.

The previous prime is 40674191. The next prime is 40674239. The reversal of 40674209 is 90247604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40360609 + 313600 = 6353^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 40674209 - 2²⁴ = 23896993 is a prime.

It is a super-3 number, since 3×40674209³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40674239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20337104 + 20337105.

It is an arithmetic number, because the mean of its divisors is an integer number (20337105).

Almost surely, 2^40674209 is an apocalyptic number.

It is an amenable number.

40674209 is a deficient number, since it is larger than the sum of its proper divisors (1).

40674209 is an equidigital number, since it uses as much as digits as its factorization.

40674209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40674209 is about 6377.6334952708. The cubic root of 40674209 is about 343.9059623298.

The spelling of 40674209 in words is "forty million, six hundred seventy-four thousand, two hundred nine".