940845389 has 32 divisors (see below), whose sum is σ = 1077705216. Its totient is φ = 813957120.

The previous prime is 940845317. The next prime is 940845397. The reversal of 940845389 is 983548049.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-940845389 is a prime.

It is a super-2 number, since 2×940845389² = 1770380092005122642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940845589) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3660749 + ... + 3661005.

It is an arithmetic number, because the mean of its divisors is an integer number (33678288).

Almost surely, 2^940845389 is an apocalyptic number.

It is an amenable number.

940845389 is a deficient number, since it is larger than the sum of its proper divisors (136859827).

940845389 is a wasteful number, since it uses less digits than its factorization.

940845389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 940845389 is about 30673.2031095548. The cubic root of 940845389 is about 979.8796843130.

The spelling of 940845389 in words is "nine hundred forty million, eight hundred forty-five thousand, three hundred eighty-nine".