40144567 has 2 divisors, whose sum is σ = 40144568. Its totient is φ = 40144566.

The previous prime is 40144553. The next prime is 40144609. The reversal of 40144567 is 76544104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40144567 - 2¹¹ = 40142519 is a prime.

It is a super-2 number, since 2×40144567² = 3223172519234978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40144537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072283 + 20072284.

It is an arithmetic number, because the mean of its divisors is an integer number (20072284).

Almost surely, 2^40144567 is an apocalyptic number.

40144567 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144567 is an equidigital number, since it uses as much as digits as its factorization.

40144567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 40144567 is about 6335.9740371943. The cubic root of 40144567 is about 342.4067041251.

The spelling of 40144567 in words is "forty million, one hundred forty-four thousand, five hundred sixty-seven".