45401409 has 12 divisors (see below), whose sum is σ = 65639652. Its totient is φ = 30240000.

The previous prime is 45401399. The next prime is 45401423. The reversal of 45401409 is 90410454.

It can be written as a sum of positive squares in 2 ways, for example, as 13727025 + 31674384 = 3705^2 + 5628^2 .

It is not a de Polignac number, because 45401409 - 2⁷ = 45401281 is a prime.

It is a super-2 number, since 2×45401409² = 4122575878370562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45401459) 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, 14809 + ... + 17609.

It is an arithmetic number, because the mean of its divisors is an integer number (5469971).

Almost surely, 2^45401409 is an apocalyptic number.

45401409 is the 3602-nd nonagonal number.

It is an amenable number.

45401409 is a deficient number, since it is larger than the sum of its proper divisors (20238243).

45401409 is a wasteful number, since it uses less digits than its factorization.

45401409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 45401409 is about 6738.0567673477. The cubic root of 45401409 is about 356.7438079085.

The spelling of 45401409 in words is "forty-five million, four hundred one thousand, four hundred nine".