154969 has 4 divisors (see below), whose sum is σ = 160000. Its totient is φ = 149940.

The previous prime is 154943. The next prime is 154981. The reversal of 154969 is 969451.

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, and also an emirpimes, since its reverse is a distinct semiprime: 969451 = 7 ⋅138493.

It is a cyclic number.

It is not a de Polignac number, because 154969 - 2⁵ = 154937 is a prime.

It is a super-2 number, since 2×154969² = 48030781922, which contains 22 as substring.

It is a Duffinian number.

154969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (154369) 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, 2469 + ... + 2530.

It is an arithmetic number, because the mean of its divisors is an integer number (40000).

2¹⁵⁴⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

154969 is a deficient number, since it is larger than the sum of its proper divisors (5031).

154969 is an equidigital number, since it uses as much as digits as its factorization.

154969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030.

The product of its digits is 9720, while the sum is 34.

The square root of 154969 is about 393.6610216925. The cubic root of 154969 is about 53.7132721871.

The spelling of 154969 in words is "one hundred fifty-four thousand, nine hundred sixty-nine".