45140399 has 4 divisors (see below), whose sum is σ = 45392760. Its totient is φ = 44888040.

The previous prime is 45140387. The next prime is 45140419. The reversal of 45140399 is 99304154.

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

It is a cyclic number.

It is not a de Polignac number, because 45140399 - 2¹² = 45136303 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 (45140299) 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, 125912 + ... + 126269.

It is an arithmetic number, because the mean of its divisors is an integer number (11348190).

Almost surely, 2^45140399 is an apocalyptic number.

45140399 is a deficient number, since it is larger than the sum of its proper divisors (252361).

45140399 is a wasteful number, since it uses less digits than its factorization.

45140399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252360.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 45140399 is about 6718.6605063807. The cubic root of 45140399 is about 356.0588606753.

The spelling of 45140399 in words is "forty-five million, one hundred forty thousand, three hundred ninety-nine".