49261905 has 96 divisors (see below), whose sum is σ = 111300480. Its totient is φ = 20442240.

The previous prime is 49261879. The next prime is 49261907. The reversal of 49261905 is 50916294.

It is not a de Polignac number, because 49261905 - 2¹² = 49257809 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49261905.

It is not an unprimeable number, because it can be changed into a prime (49261907) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72427 + ... + 73103.

It is an arithmetic number, because the mean of its divisors is an integer number (1159380).

Almost surely, 2^49261905 is an apocalyptic number.

49261905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49261905 is an abundant number, since it is smaller than the sum of its proper divisors (62038575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49261905 is a wasteful number, since it uses less digits than its factorization.

49261905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 49261905 is about 7018.6825686877. The cubic root of 49261905 is about 366.5813791534.

The spelling of 49261905 in words is "forty-nine million, two hundred sixty-one thousand, nine hundred five".