849451900 has 36 divisors (see below), whose sum is σ = 2010886920. Its totient is φ = 308891200.

The previous prime is 849451891. The next prime is 849451907. The reversal of 849451900 is 9154948.

It is a super-2 number, since 2×849451900² = 1443137060827220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849451907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385015 + ... + 387214.

It is an arithmetic number, because the mean of its divisors is an integer number (55857970).

Almost surely, 2^849451900 is an apocalyptic number.

It is an amenable number.

849451900 is an abundant number, since it is smaller than the sum of its proper divisors (1161435020).

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

849451900 is a wasteful number, since it uses less digits than its factorization.

849451900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772254 (or 772247 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 849451900 is about 29145.3581209770. The cubic root of 849451900 is about 947.0645864574.

The spelling of 849451900 in words is "eight hundred forty-nine million, four hundred fifty-one thousand, nine hundred".