990906153 has 16 divisors (see below), whose sum is σ = 1347917760. Its totient is φ = 647381504.

The previous prime is 990906151. The next prime is 990906181. The reversal of 990906153 is 351609099.

It is a cyclic number.

It is not a de Polignac number, because 990906153 - 2¹ = 990906151 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (990906151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13750 + ... + 46592.

It is an arithmetic number, because the mean of its divisors is an integer number (84244860).

Almost surely, 2^990906153 is an apocalyptic number.

It is an amenable number.

990906153 is a deficient number, since it is larger than the sum of its proper divisors (357011607).

990906153 is a wasteful number, since it uses less digits than its factorization.

990906153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33048.

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 990906153 is about 31478.6618680019. The cubic root of 990906153 is about 996.9594822883.

The spelling of 990906153 in words is "nine hundred ninety million, nine hundred six thousand, one hundred fifty-three".