43149465 has 12 divisors (see below), whose sum is σ = 74792484. Its totient is φ = 23013024.

The previous prime is 43149439. The next prime is 43149467. The reversal of 43149465 is 56494134.

It can be written as a sum of positive squares in 2 ways, for example, as 30702681 + 12446784 = 5541^2 + 3528^2 .

It is not a de Polignac number, because 43149465 - 2⁶ = 43149401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43149467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479394 + ... + 479483.

It is an arithmetic number, because the mean of its divisors is an integer number (6232707).

Almost surely, 2^43149465 is an apocalyptic number.

43149465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43149465 is a deficient number, since it is larger than the sum of its proper divisors (31643019).

43149465 is a wasteful number, since it uses less digits than its factorization.

43149465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958888 (or 958885 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 43149465 is about 6568.8252374378. The cubic root of 43149465 is about 350.7452555373.

The spelling of 43149465 in words is "forty-three million, one hundred forty-nine thousand, four hundred sixty-five".