61389417 has 4 divisors (see below), whose sum is σ = 81852560. Its totient is φ = 40926276.

The previous prime is 61389413. The next prime is 61389439. The reversal of 61389417 is 71498316.

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 not a de Polignac number, because 61389417 - 2² = 61389413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61389413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10231567 + ... + 10231572.

It is an arithmetic number, because the mean of its divisors is an integer number (20463140).

Almost surely, 2^61389417 is an apocalyptic number.

It is an amenable number.

61389417 is a deficient number, since it is larger than the sum of its proper divisors (20463143).

61389417 is a wasteful number, since it uses less digits than its factorization.

61389417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20463142.

The product of its digits is 36288, while the sum is 39.

The square root of 61389417 is about 7835.1398838821. The cubic root of 61389417 is about 394.4856136153.

The spelling of 61389417 in words is "sixty-one million, three hundred eighty-nine thousand, four hundred seventeen".