654869149 has 4 divisors (see below), whose sum is σ = 714402720. Its totient is φ = 595335580.

The previous prime is 654869147. The next prime is 654869177. The reversal of 654869149 is 941968456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 654869149 - 2¹ = 654869147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654869096 and 654869105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654869147) 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, 29766769 + ... + 29766790.

It is an arithmetic number, because the mean of its divisors is an integer number (178600680).

Almost surely, 2^654869149 is an apocalyptic number.

It is an amenable number.

654869149 is a deficient number, since it is larger than the sum of its proper divisors (59533571).

654869149 is a wasteful number, since it uses less digits than its factorization.

654869149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59533570.

The product of its digits is 1866240, while the sum is 52.

The square root of 654869149 is about 25590.4112706303. The cubic root of 654869149 is about 868.3967253019.

The spelling of 654869149 in words is "six hundred fifty-four million, eight hundred sixty-nine thousand, one hundred forty-nine".