40197029 has 2 divisors, whose sum is σ = 40197030. Its totient is φ = 40197028.

The previous prime is 40197013. The next prime is 40197107. The reversal of 40197029 is 92079104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37540129 + 2656900 = 6127^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 40197029 - 2⁴ = 40197013 is a prime.

It is a super-2 number, since 2×40197029² = 3231602280853682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40196986 and 40197004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40197229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20098514 + 20098515.

It is an arithmetic number, because the mean of its divisors is an integer number (20098515).

Almost surely, 2^40197029 is an apocalyptic number.

It is an amenable number.

40197029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40197029 is an equidigital number, since it uses as much as digits as its factorization.

40197029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 40197029 is about 6340.1126961593. The cubic root of 40197029 is about 342.5557946292. Note that the first 3 decimals are identical.

The spelling of 40197029 in words is "forty million, one hundred ninety-seven thousand, twenty-nine".