61395949 has 4 divisors (see below), whose sum is σ = 61787164. Its totient is φ = 61004736.

The previous prime is 61395941. The next prime is 61395953. The reversal of 61395949 is 94959316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43797924 + 17598025 = 6618^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 61395949 - 2³ = 61395941 is a prime.

It is a super-2 number, since 2×61395949² = 7538925107221202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61395899 and 61395908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61395941) 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, 195372 + ... + 195685.

It is an arithmetic number, because the mean of its divisors is an integer number (15446791).

Almost surely, 2^61395949 is an apocalyptic number.

It is an amenable number.

61395949 is a deficient number, since it is larger than the sum of its proper divisors (391215).

61395949 is a wasteful number, since it uses less digits than its factorization.

61395949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391214.

The product of its digits is 262440, while the sum is 46.

The square root of 61395949 is about 7835.5567128316. The cubic root of 61395949 is about 394.4996045645.

The spelling of 61395949 in words is "sixty-one million, three hundred ninety-five thousand, nine hundred forty-nine".