61279438 has 16 divisors (see below), whose sum is σ = 101252736. Its totient is φ = 27582840.

The previous prime is 61279417. The next prime is 61279447. The reversal of 61279438 is 83497216.

It is a self number, because there is not a number n which added to its sum of digits gives 61279438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11256 + ... + 15787.

It is an arithmetic number, because the mean of its divisors is an integer number (6328296).

Almost surely, 2^61279438 is an apocalyptic number.

61279438 is a deficient number, since it is larger than the sum of its proper divisors (39973298).

61279438 is a wasteful number, since it uses less digits than its factorization.

61279438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27159.

The product of its digits is 72576, while the sum is 40.

The square root of 61279438 is about 7828.1184201569. The cubic root of 61279438 is about 394.2498994409.

The spelling of 61279438 in words is "sixty-one million, two hundred seventy-nine thousand, four hundred thirty-eight".