49261979 has 6 divisors (see below), whose sum is σ = 53343036. Its totient is φ = 45472440.

The previous prime is 49261973. The next prime is 49261987. The reversal of 49261979 is 97916294.

It is a de Polignac number, because none of the positive numbers 2^k-49261979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49261973) 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, 145577 + ... + 145914.

It is an arithmetic number, because the mean of its divisors is an integer number (8890506).

Almost surely, 2^49261979 is an apocalyptic number.

49261979 is a deficient number, since it is larger than the sum of its proper divisors (4081057).

49261979 is a wasteful number, since it uses less digits than its factorization.

49261979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291517 (or 291504 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 49261979 is about 7018.6878403303. The cubic root of 49261979 is about 366.5815627097.

The spelling of 49261979 in words is "forty-nine million, two hundred sixty-one thousand, nine hundred seventy-nine".