40251404 has 6 divisors (see below), whose sum is σ = 70439964. Its totient is φ = 20125700.

The previous prime is 40251401. The next prime is 40251437. The reversal of 40251404 is 40415204.

It is not an unprimeable number, because it can be changed into a prime (40251401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5031422 + ... + 5031429.

It is an arithmetic number, because the mean of its divisors is an integer number (11739994).

Almost surely, 2^40251404 is an apocalyptic number.

It is an amenable number.

40251404 is a deficient number, since it is larger than the sum of its proper divisors (30188560).

40251404 is a wasteful number, since it uses less digits than its factorization.

40251404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062855 (or 10062853 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40251404 is about 6344.3994199609. The cubic root of 40251404 is about 342.7101848031.

Adding to 40251404 its reverse (40415204), we get a palindrome (80666608).

The spelling of 40251404 in words is "forty million, two hundred fifty-one thousand, four hundred four".