40380061 has 8 divisors (see below), whose sum is σ = 41591000. Its totient is φ = 39175488.

The previous prime is 40380059. The next prime is 40380077. The reversal of 40380061 is 16008304.

It can be written as a sum of positive squares in 4 ways, for example, as 8964036 + 31416025 = 2994^2 + 5605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40380061 - 2¹ = 40380059 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 (40380091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13315 + ... + 16063.

It is an arithmetic number, because the mean of its divisors is an integer number (5198875).

Almost surely, 2^40380061 is an apocalyptic number.

It is an amenable number.

40380061 is a deficient number, since it is larger than the sum of its proper divisors (1210939).

40380061 is a wasteful number, since it uses less digits than its factorization.

40380061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40380061 is about 6354.5307458537. The cubic root of 40380061 is about 343.0749353909.

Adding to 40380061 its reverse (16008304), we get a palindrome (56388365).

The spelling of 40380061 in words is "forty million, three hundred eighty thousand, sixty-one".