45339990 has 32 divisors (see below), whose sum is σ = 109105920. Its totient is φ = 12058464.

The previous prime is 45339971. The next prime is 45339991. The reversal of 45339990 is 9993354.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45339991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10767 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (3409560).

Almost surely, 2^45339990 is an apocalyptic number.

45339990 is an abundant number, since it is smaller than the sum of its proper divisors (63765930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45339990 is a wasteful number, since it uses less digits than its factorization.

45339990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 45339990 is about 6733.4976052569. The cubic root of 45339990 is about 356.5828677073.

The spelling of 45339990 in words is "forty-five million, three hundred thirty-nine thousand, nine hundred ninety".