153990445 has 16 divisors (see below), whose sum is σ = 212002560. Its totient is φ = 105185664.

The previous prime is 153990401. The next prime is 153990511. The reversal of 153990445 is 544099351.

It is a cyclic number.

It is not a de Polignac number, because 153990445 - 2²¹ = 151893293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 153990398 and 153990407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841 + ... + 17569.

It is an arithmetic number, because the mean of its divisors is an integer number (13250160).

Almost surely, 2^153990445 is an apocalyptic number.

It is an amenable number.

153990445 is a deficient number, since it is larger than the sum of its proper divisors (58012115).

153990445 is a wasteful number, since it uses less digits than its factorization.

153990445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17004.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 153990445 is about 12409.2886580980. The cubic root of 153990445 is about 535.9997551885. Note that the first 3 decimals are identical.

The spelling of 153990445 in words is "one hundred fifty-three million, nine hundred ninety thousand, four hundred forty-five".