40774157 has 4 divisors (see below), whose sum is σ = 40791516. Its totient is φ = 40756800.

The previous prime is 40774141. The next prime is 40774159. The reversal of 40774157 is 75147704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13169641 + 27604516 = 3629^2 + 5254^2 .

It is a cyclic number.

It is not a de Polignac number, because 40774157 - 2⁴ = 40774141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40774159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4478 + ... + 10079.

It is an arithmetic number, because the mean of its divisors is an integer number (10197879).

Almost surely, 2^40774157 is an apocalyptic number.

It is an amenable number.

40774157 is a deficient number, since it is larger than the sum of its proper divisors (17359).

40774157 is a wasteful number, since it uses less digits than its factorization.

40774157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17358.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 40774157 is about 6385.4645093368. The cubic root of 40774157 is about 344.1874232183.

The spelling of 40774157 in words is "forty million, seven hundred seventy-four thousand, one hundred fifty-seven".