840990153 has 16 divisors (see below), whose sum is σ = 1187870400. Its totient is φ = 527417856.

The previous prime is 840990133. The next prime is 840990181. The reversal of 840990153 is 351099048.

It is not a de Polignac number, because 840990153 - 2¹² = 840986057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840990133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178573 + ... + 183221.

It is an arithmetic number, because the mean of its divisors is an integer number (74241900).

Almost surely, 2^840990153 is an apocalyptic number.

It is an amenable number.

840990153 is a deficient number, since it is larger than the sum of its proper divisors (346880247).

840990153 is a wasteful number, since it uses less digits than its factorization.

840990153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 840990153 is about 28999.8302236410. The cubic root of 840990153 is about 943.9093837328.

The spelling of 840990153 in words is "eight hundred forty million, nine hundred ninety thousand, one hundred fifty-three".