135554969 has 6 divisors (see below), whose sum is σ = 148998570. Its totient is φ = 123231680.

The previous prime is 135554933. The next prime is 135554977. The reversal of 135554969 is 969455531.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 46063369 = 9460^2 + 6787^2 .

It is not a de Polignac number, because 135554969 - 2¹² = 135550873 is a prime.

It is a super-2 number, since 2×135554969² = 36750299241181922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135554369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560024 + ... + 560265.

It is an arithmetic number, because the mean of its divisors is an integer number (24833095).

Almost surely, 2^135554969 is an apocalyptic number.

It is an amenable number.

135554969 is a deficient number, since it is larger than the sum of its proper divisors (13443601).

135554969 is a wasteful number, since it uses less digits than its factorization.

135554969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120311 (or 1120300 counting only the distinct ones).

The product of its digits is 729000, while the sum is 47.

The square root of 135554969 is about 11642.8076081330. The cubic root of 135554969 is about 513.6947737930.

The spelling of 135554969 in words is "one hundred thirty-five million, five hundred fifty-four thousand, nine hundred sixty-nine".