61393444 has 12 divisors (see below), whose sum is σ = 122786944. Its totient is φ = 26311464.

The previous prime is 61393439. The next prime is 61393447. The reversal of 61393444 is 44439316.

61393444 is an admirable number.

It is a super-2 number, since 2×61393444² = 7538309932362272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61393447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096284 + ... + 1096339.

Almost surely, 2^61393444 is an apocalyptic number.

It is an amenable number.

61393444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61393444 is a wasteful number, since it uses less digits than its factorization.

61393444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192634 (or 2192632 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 61393444 is about 7835.3968629547. The cubic root of 61393444 is about 394.4942391999.

The spelling of 61393444 in words is "sixty-one million, three hundred ninety-three thousand, four hundred forty-four".