2990405 has 8 divisors (see below), whose sum is σ = 3914784. Its totient is φ = 2174800.

The previous prime is 2990401. The next prime is 2990423. The reversal of 2990405 is 5040992.

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

It is not a de Polignac number, because 2990405 - 2² = 2990401 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 27131 + ... + 27240.

It is an arithmetic number, because the mean of its divisors is an integer number (489348).

2^2990405 is an apocalyptic number.

It is an amenable number.

2990405 is a deficient number, since it is larger than the sum of its proper divisors (924379).

2990405 is a wasteful number, since it uses less digits than its factorization.

2990405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54387.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2990405 is about 1729.2787513874. The cubic root of 2990405 is about 144.0710329846.

The spelling of 2990405 in words is "two million, nine hundred ninety thousand, four hundred five".