40661461 has 4 divisors (see below), whose sum is σ = 40888800. Its totient is φ = 40434124.

The previous prime is 40661459. The next prime is 40661473. The reversal of 40661461 is 16416604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40661461 - 2¹ = 40661459 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 (47661461) 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, 113401 + ... + 113758.

It is an arithmetic number, because the mean of its divisors is an integer number (10222200).

Almost surely, 2^40661461 is an apocalyptic number.

It is an amenable number.

40661461 is a deficient number, since it is larger than the sum of its proper divisors (227339).

40661461 is a wasteful number, since it uses less digits than its factorization.

40661461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227338.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40661461 is about 6376.6339866735. The cubic root of 40661461 is about 343.8700298850.

The spelling of 40661461 in words is "forty million, six hundred sixty-one thousand, four hundred sixty-one".