2900906 has 4 divisors (see below), whose sum is σ = 4351362. Its totient is φ = 1450452.

The previous prime is 2900903. The next prime is 2900923. The reversal of 2900906 is 6090092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 292681 = 1615^2 + 541^2 .

It is not an unprimeable number, because it can be changed into a prime (2900903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725225 + ... + 725228.

2^2900906 is an apocalyptic number.

2900906 is a deficient number, since it is larger than the sum of its proper divisors (1450456).

2900906 is a wasteful number, since it uses less digits than its factorization.

2900906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450455.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 2900906 is about 1703.2046265790. The cubic root of 2900906 is about 142.6191636863.

Adding to 2900906 its reverse (6090092), we get a palindrome (8990998).

The spelling of 2900906 in words is "two million, nine hundred thousand, nine hundred six".