40377577 has 4 divisors (see below), whose sum is σ = 40396356. Its totient is φ = 40358800.

The previous prime is 40377563. The next prime is 40377613. The reversal of 40377577 is 77577304.

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 27625536 + 12752041 = 5256^2 + 3571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40377577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40377517) 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, 5674 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (10099089).

Almost surely, 2^40377577 is an apocalyptic number.

It is an amenable number.

40377577 is a deficient number, since it is larger than the sum of its proper divisors (18779).

40377577 is a wasteful number, since it uses less digits than its factorization.

40377577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18778.

The product of its (nonzero) digits is 144060, while the sum is 40.

The square root of 40377577 is about 6354.3352917516. The cubic root of 40377577 is about 343.0679004369.

The spelling of 40377577 in words is "forty million, three hundred seventy-seven thousand, five hundred seventy-seven".