61469189 has 4 divisors (see below), whose sum is σ = 62247360. Its totient is φ = 60691020.

The previous prime is 61469171. The next prime is 61469201. The reversal of 61469189 is 98196416.

61469189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-61469189 is a prime.

It is a super-2 number, since 2×61469189² = 7556922392635442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61469119) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 388967 + ... + 389124.

It is an arithmetic number, because the mean of its divisors is an integer number (15561840).

Almost surely, 2^61469189 is an apocalyptic number.

It is an amenable number.

61469189 is a deficient number, since it is larger than the sum of its proper divisors (778171).

61469189 is an equidigital number, since it uses as much as digits as its factorization.

61469189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778170.

The product of its digits is 93312, while the sum is 44.

The square root of 61469189 is about 7840.2288869650. The cubic root of 61469189 is about 394.6564100764.

The spelling of 61469189 in words is "sixty-one million, four hundred sixty-nine thousand, one hundred eighty-nine".