45840149 has 4 divisors (see below), whose sum is σ = 45958380. Its totient is φ = 45721920.

The previous prime is 45840139. The next prime is 45840167. The reversal of 45840149 is 94104854.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94104854 = 2 ⋅47052427.

It can be written as a sum of positive squares in 2 ways, for example, as 7524049 + 38316100 = 2743^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 45840149 - 2⁴ = 45840133 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 (45840139) 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, 58532 + ... + 59309.

It is an arithmetic number, because the mean of its divisors is an integer number (11489595).

Almost surely, 2^45840149 is an apocalyptic number.

It is an amenable number.

45840149 is a deficient number, since it is larger than the sum of its proper divisors (118231).

45840149 is a wasteful number, since it uses less digits than its factorization.

45840149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118230.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 45840149 is about 6770.5353554944. The cubic root of 45840149 is about 357.8892664400.

The spelling of 45840149 in words is "forty-five million, eight hundred forty thousand, one hundred forty-nine".