891013490 has 8 divisors (see below), whose sum is σ = 1603824300. Its totient is φ = 356405392.

The previous prime is 891013483. The next prime is 891013499. The reversal of 891013490 is 94310198.

It can be written as a sum of positive squares in 2 ways, for example, as 873616249 + 17397241 = 29557^2 + 4171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 891013490.

It is not an unprimeable number, because it can be changed into a prime (891013499) 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, 44550665 + ... + 44550684.

Almost surely, 2^891013490 is an apocalyptic number.

891013490 is a deficient number, since it is larger than the sum of its proper divisors (712810810).

891013490 is a wasteful number, since it uses less digits than its factorization.

891013490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89101356.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 891013490 is about 29849.8490783454. The cubic root of 891013490 is about 962.2651552748.

The spelling of 891013490 in words is "eight hundred ninety-one million, thirteen thousand, four hundred ninety".