49231978 has 12 divisors (see below), whose sum is σ = 75902022. Its totient is φ = 23949360.

The previous prime is 49231967. The next prime is 49231979. The reversal of 49231978 is 87913294.

It can be written as a sum of positive squares in 3 ways, for example, as 41126569 + 8105409 = 6413^2 + 2847^2 .

It is a super-3 number, since 3×49231978³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (49231979) 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, 6253 + ... + 11728.

Almost surely, 2^49231978 is an apocalyptic number.

49231978 is a deficient number, since it is larger than the sum of its proper divisors (26670044).

49231978 is a wasteful number, since it uses less digits than its factorization.

49231978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18057 (or 18020 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 49231978 is about 7016.5502919882. The cubic root of 49231978 is about 366.5071304124.

The spelling of 49231978 in words is "forty-nine million, two hundred thirty-one thousand, nine hundred seventy-eight".