4638992 has 10 divisors (see below), whose sum is σ = 8988078. Its totient is φ = 2319488.

The previous prime is 4638979. The next prime is 4639003. The reversal of 4638992 is 2998364.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4343056 + 295936 = 2084^2 + 544^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144953 + ... + 144984.

Almost surely, 2^4638992 is an apocalyptic number.

It is an amenable number.

4638992 is a deficient number, since it is larger than the sum of its proper divisors (4349086).

4638992 is a wasteful number, since it uses less digits than its factorization.

4638992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289945 (or 289939 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 4638992 is about 2153.8319340190. The cubic root of 4638992 is about 166.7789394630.

The spelling of 4638992 in words is "four million, six hundred thirty-eight thousand, nine hundred ninety-two".