40155407 has 2 divisors, whose sum is σ = 40155408. Its totient is φ = 40155406.

The previous prime is 40155403. The next prime is 40155433. The reversal of 40155407 is 70455104.

40155407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40155433) can be obtained adding 40155407 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40155407 - 2² = 40155403 is a prime.

It is a super-2 number, since 2×40155407² = 3224913422671298, 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 (40155403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20077703 + 20077704.

It is an arithmetic number, because the mean of its divisors is an integer number (20077704).

Almost surely, 2^40155407 is an apocalyptic number.

40155407 is a deficient number, since it is larger than the sum of its proper divisors (1).

40155407 is an equidigital number, since it uses as much as digits as its factorization.

40155407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 40155407 is about 6336.8294122534. The cubic root of 40155407 is about 342.4375207039.

The spelling of 40155407 in words is "forty million, one hundred fifty-five thousand, four hundred seven".