40106149 has 2 divisors, whose sum is σ = 40106150. Its totient is φ = 40106148.

The previous prime is 40106147. The next prime is 40106177. The reversal of 40106149 is 94160104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40068900 + 37249 = 6330^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 40106149 - 2¹ = 40106147 is a prime.

It is a super-2 number, since 2×40106149² = 3217006375220402, which contains 22 as substring.

Together with 40106147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40106147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20053074 + 20053075.

It is an arithmetic number, because the mean of its divisors is an integer number (20053075).

Almost surely, 2^40106149 is an apocalyptic number.

It is an amenable number.

40106149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40106149 is an equidigital number, since it uses as much as digits as its factorization.

40106149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 40106149 is about 6332.9415756029. The cubic root of 40106149 is about 342.2974425218.

The spelling of 40106149 in words is "forty million, one hundred six thousand, one hundred forty-nine".