153999969 has 8 divisors (see below), whose sum is σ = 208398240. Its totient is φ = 101134176.

The previous prime is 153999961. The next prime is 153999983. The reversal of 153999969 is 969999351.

153999969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 153999969 - 2³ = 153999961 is a prime.

It is a super-5 number, since 5×153999969⁵ (a number of 42 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (153999961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382884 + ... + 383285.

It is an arithmetic number, because the mean of its divisors is an integer number (26049780).

Almost surely, 2^153999969 is an apocalyptic number.

It is an amenable number.

153999969 is a deficient number, since it is larger than the sum of its proper divisors (54398271).

153999969 is an equidigital number, since it uses as much as digits as its factorization.

153999969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766239.

The product of its digits is 5314410, while the sum is 60.

The square root of 153999969 is about 12409.6723969652. The cubic root of 153999969 is about 536.0108051304.

The spelling of 153999969 in words is "one hundred fifty-three million, nine hundred ninety-nine thousand, nine hundred sixty-nine".