49019978 has 8 divisors (see below), whose sum is σ = 84034272. Its totient is φ = 21008556.

The previous prime is 49019963. The next prime is 49019983. The reversal of 49019978 is 87991094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750700 + ... + 1750727.

It is an arithmetic number, because the mean of its divisors is an integer number (10504284).

Almost surely, 2^49019978 is an apocalyptic number.

49019978 is a deficient number, since it is larger than the sum of its proper divisors (35014294).

49019978 is a wasteful number, since it uses less digits than its factorization.

49019978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501436.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 49019978 is about 7001.4268545776. The cubic root of 49019978 is about 365.9802959522.

The spelling of 49019978 in words is "forty-nine million, nineteen thousand, nine hundred seventy-eight".