2990406 has 8 divisors (see below), whose sum is σ = 5980824. Its totient is φ = 996800.

The previous prime is 2990401. The next prime is 2990423. The reversal of 2990406 is 6040992.

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

2990406 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2990401) 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, 249195 + ... + 249206.

It is an arithmetic number, because the mean of its divisors is an integer number (747603).

2^2990406 is an apocalyptic number.

2990406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2990406 is a wasteful number, since it uses less digits than its factorization.

2990406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498406.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2990406 is about 1729.2790405253. The cubic root of 2990406 is about 144.0710490438.

The spelling of 2990406 in words is "two million, nine hundred ninety thousand, four hundred six".