49011979 has 4 divisors (see below), whose sum is σ = 49061376. Its totient is φ = 48962584.

The previous prime is 49011973. The next prime is 49011983. The reversal of 49011979 is 97911094.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97911094 = 2 ⋅48955547.

It is a cyclic number.

It is not a de Polignac number, because 49011979 - 2³ = 49011971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49011971) 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, 23179 + ... + 25204.

It is an arithmetic number, because the mean of its divisors is an integer number (12265344).

Almost surely, 2^49011979 is an apocalyptic number.

49011979 is a deficient number, since it is larger than the sum of its proper divisors (49397).

49011979 is a wasteful number, since it uses less digits than its factorization.

49011979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49396.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 49011979 is about 7000.8555905689. The cubic root of 49011979 is about 365.9603881802.

The spelling of 49011979 in words is "forty-nine million, eleven thousand, nine hundred seventy-nine".