153469949 has 4 divisors (see below), whose sum is σ = 153574236. Its totient is φ = 153365664.

The previous prime is 153469937. The next prime is 153469963. The reversal of 153469949 is 949964351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949964351 = 7 ⋅135709193.

It can be written as a sum of positive squares in 2 ways, for example, as 137124100 + 16345849 = 11710^2 + 4043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153469949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153469897 and 153469906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153469049) 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, 49904 + ... + 52889.

It is an arithmetic number, because the mean of its divisors is an integer number (38393559).

Almost surely, 2^153469949 is an apocalyptic number.

It is an amenable number.

153469949 is a deficient number, since it is larger than the sum of its proper divisors (104287).

153469949 is a wasteful number, since it uses less digits than its factorization.

153469949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104286.

The product of its digits is 1049760, while the sum is 50.

The square root of 153469949 is about 12388.2988743411. The cubic root of 153469949 is about 535.3951708173.

The spelling of 153469949 in words is "one hundred fifty-three million, four hundred sixty-nine thousand, nine hundred forty-nine".