840461172 has 24 divisors (see below), whose sum is σ = 1993226592. Its totient is φ = 275560800.

The previous prime is 840461129. The next prime is 840461203. The reversal of 840461172 is 271164048.

It is a super-2 number, since 2×840461172² = 1412749963279227168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573354 + ... + 574817.

It is an arithmetic number, because the mean of its divisors is an integer number (83051108).

Almost surely, 2^840461172 is an apocalyptic number.

It is an amenable number.

840461172 is an abundant number, since it is smaller than the sum of its proper divisors (1152765420).

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

840461172 is a wasteful number, since it uses less digits than its factorization.

840461172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148239 (or 1148237 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 840461172 is about 28990.7083735462. The cubic root of 840461172 is about 943.7114365658.

The spelling of 840461172 in words is "eight hundred forty million, four hundred sixty-one thousand, one hundred seventy-two".