45999389 has 4 divisors (see below), whose sum is σ = 46867356. Its totient is φ = 45131424.

The previous prime is 45999377. The next prime is 45999391. The reversal of 45999389 is 98399954.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24423364 + 21576025 = 4942^2 + 4645^2 .

It is a cyclic number.

It is not a de Polignac number, because 45999389 - 2¹² = 45995293 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 (45999329) 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, 433904 + ... + 434009.

It is an arithmetic number, because the mean of its divisors is an integer number (11716839).

Almost surely, 2^45999389 is an apocalyptic number.

It is an amenable number.

45999389 is a deficient number, since it is larger than the sum of its proper divisors (867967).

45999389 is an equidigital number, since it uses as much as digits as its factorization.

45999389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867966.

The product of its digits is 3149280, while the sum is 56.

The square root of 45999389 is about 6782.2849394581. The cubic root of 45999389 is about 358.3032006871.

The spelling of 45999389 in words is "forty-five million, nine hundred ninety-nine thousand, three hundred eighty-nine".