49147945 has 16 divisors (see below), whose sum is σ = 73531008. Its totient is φ = 30637440.

The previous prime is 49147939. The next prime is 49147963. The reversal of 49147945 is 54974194.

It is not a de Polignac number, because 49147945 - 2¹⁹ = 48623657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63444 + ... + 64213.

It is an arithmetic number, because the mean of its divisors is an integer number (4595688).

Almost surely, 2^49147945 is an apocalyptic number.

It is an amenable number.

49147945 is a deficient number, since it is larger than the sum of its proper divisors (24383063).

49147945 is a wasteful number, since it uses less digits than its factorization.

49147945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127680.

The product of its digits is 181440, while the sum is 43.

The square root of 49147945 is about 7010.5595354437. The cubic root of 49147945 is about 366.2984839541.

The spelling of 49147945 in words is "forty-nine million, one hundred forty-seven thousand, nine hundred forty-five".