61239404 has 24 divisors (see below), whose sum is σ = 111661200. Its totient is φ = 29361920.

The previous prime is 61239397. The next prime is 61239443. The reversal of 61239404 is 40493216.

61239404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6512 + ... + 12840.

It is an arithmetic number, because the mean of its divisors is an integer number (4652550).

Almost surely, 2^61239404 is an apocalyptic number.

It is an amenable number.

61239404 is a deficient number, since it is larger than the sum of its proper divisors (50421796).

61239404 is a wasteful number, since it uses less digits than its factorization.

61239404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 61239404 is about 7825.5609383609. The cubic root of 61239404 is about 394.1640259443.

The spelling of 61239404 in words is "sixty-one million, two hundred thirty-nine thousand, four hundred four".