945890 has 16 divisors (see below), whose sum is σ = 1857600. Its totient is φ = 343920.

The previous prime is 945887. The next prime is 945899. The reversal of 945890 is 98549.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 945890.

It is not an unprimeable number, because it can be changed into a prime (945899) 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, 4190 + ... + 4409.

It is an arithmetic number, because the mean of its divisors is an integer number (116100).

2⁹⁴⁵⁸⁹⁰ is an apocalyptic number.

945890 is a deficient number, since it is larger than the sum of its proper divisors (911710).

945890 is a wasteful number, since it uses less digits than its factorization.

945890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 945890 is about 972.5687636358. The cubic root of 945890 is about 98.1627865073.

The spelling of 945890 in words is "nine hundred forty-five thousand, eight hundred ninety".