49019905 has 32 divisors (see below), whose sum is σ = 68745600. Its totient is φ = 33177600.

The previous prime is 49019903. The next prime is 49019909. The reversal of 49019905 is 50991094.

It is not a de Polignac number, because 49019905 - 2¹ = 49019903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49019903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63361 + ... + 64129.

It is an arithmetic number, because the mean of its divisors is an integer number (2148300).

Almost surely, 2^49019905 is an apocalyptic number.

It is an amenable number.

49019905 is a deficient number, since it is larger than the sum of its proper divisors (19725695).

49019905 is a wasteful number, since it uses less digits than its factorization.

49019905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 49019905 is about 7001.4216413526. The cubic root of 49019905 is about 365.9801142808.

The spelling of 49019905 in words is "forty-nine million, nineteen thousand, nine hundred five".