916409049 has 16 divisors (see below), whose sum is σ = 1241308992. Its totient is φ = 601242048.

The previous prime is 916409047. The next prime is 916409051. The reversal of 916409049 is 940904619.

It is an interprime number because it is at equal distance from previous prime (916409047) and next prime (916409051).

It is not a de Polignac number, because 916409049 - 2¹ = 916409047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 916409049.

It is not an unprimeable number, because it can be changed into a prime (916409047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338947 + ... + 341639.

It is an arithmetic number, because the mean of its divisors is an integer number (77581812).

Almost surely, 2^916409049 is an apocalyptic number.

It is an amenable number.

916409049 is a deficient number, since it is larger than the sum of its proper divisors (324899943).

916409049 is a wasteful number, since it uses less digits than its factorization.

916409049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 916409049 is about 30272.2488262765. The cubic root of 916409049 is about 971.3217708906.

It can be divided in two parts, 916 and 409049, that added together give a triangular number (409965 = T₉₀₅).

The spelling of 916409049 in words is "nine hundred sixteen million, four hundred nine thousand, forty-nine".