160990406 has 4 divisors (see below), whose sum is σ = 241485612. Its totient is φ = 80495202.

The previous prime is 160990399. The next prime is 160990451. The reversal of 160990406 is 604099061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604099061 = 10133 ⋅59617.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40247600 + ... + 40247603.

It is an arithmetic number, because the mean of its divisors is an integer number (60371403).

Almost surely, 2^160990406 is an apocalyptic number.

160990406 is a deficient number, since it is larger than the sum of its proper divisors (80495206).

160990406 is an equidigital number, since it uses as much as digits as its factorization.

160990406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80495205.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 160990406 is about 12688.1994782554. The cubic root of 160990406 is about 544.0013764202.

The spelling of 160990406 in words is "one hundred sixty million, nine hundred ninety thousand, four hundred six".