49400165 has 4 divisors (see below), whose sum is σ = 59280204. Its totient is φ = 39520128.

The previous prime is 49400161. The next prime is 49400177. The reversal of 49400165 is 56100494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56100494 = 2 ⋅28050247.

It can be written as a sum of positive squares in 2 ways, for example, as 31158724 + 18241441 = 5582^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 49400165 - 2² = 49400161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49400161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4940012 + ... + 4940021.

It is an arithmetic number, because the mean of its divisors is an integer number (14820051).

Almost surely, 2^49400165 is an apocalyptic number.

It is an amenable number.

49400165 is a deficient number, since it is larger than the sum of its proper divisors (9880039).

49400165 is an equidigital number, since it uses as much as digits as its factorization.

49400165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880038.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 49400165 is about 7028.5250942143. The cubic root of 49400165 is about 366.9240117184.

The spelling of 49400165 in words is "forty-nine million, four hundred thousand, one hundred sixty-five".