40004961 has 8 divisors (see below), whose sum is σ = 56477664. Its totient is φ = 25101120.

The previous prime is 40004947. The next prime is 40004969. The reversal of 40004961 is 16940004.

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

It is not a de Polignac number, because 40004961 - 2⁶ = 40004897 is a prime.

It is a super-2 number, since 2×40004961² = 3200793809223042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40004969) 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, 392155 + ... + 392256.

It is an arithmetic number, because the mean of its divisors is an integer number (7059708).

Almost surely, 2^40004961 is an apocalyptic number.

It is an amenable number.

40004961 is a deficient number, since it is larger than the sum of its proper divisors (16472703).

40004961 is a wasteful number, since it uses less digits than its factorization.

40004961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784431.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 40004961 is about 6324.9475096636. The cubic root of 40004961 is about 342.0093274020.

Adding to 40004961 its reverse (16940004), we get a palindrome (56944965).

The spelling of 40004961 in words is "forty million, four thousand, nine hundred sixty-one".