45861990 has 16 divisors (see below), whose sum is σ = 110068848. Its totient is φ = 12229856.

The previous prime is 45861941. The next prime is 45861997. The reversal of 45861990 is 9916854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45861997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764337 + ... + 764396.

It is an arithmetic number, because the mean of its divisors is an integer number (6879303).

Almost surely, 2^45861990 is an apocalyptic number.

45861990 is an abundant number, since it is smaller than the sum of its proper divisors (64206858).

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

45861990 is a wasteful number, since it uses less digits than its factorization.

45861990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528743.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 45861990 is about 6772.1481082445. The cubic root of 45861990 is about 357.9460973952.

The spelling of 45861990 in words is "forty-five million, eight hundred sixty-one thousand, nine hundred ninety".