61447959 has 6 divisors (see below), whose sum is σ = 88758176. Its totient is φ = 40965300.

The previous prime is 61447949. The next prime is 61448021. The reversal of 61447959 is 95974416.

It is not a de Polignac number, because 61447959 - 2⁴ = 61447943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61447949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3413767 + ... + 3413784.

Almost surely, 2^61447959 is an apocalyptic number.

61447959 is a deficient number, since it is larger than the sum of its proper divisors (27310217).

61447959 is a wasteful number, since it uses less digits than its factorization.

61447959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827557 (or 6827554 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 61447959 is about 7838.8748554879. The cubic root of 61447959 is about 394.6109698568.

The spelling of 61447959 in words is "sixty-one million, four hundred forty-seven thousand, nine hundred fifty-nine".