4994388 has 36 divisors (see below), whose sum is σ = 14428960. Its totient is φ = 1426896.

The previous prime is 4994387. The next prime is 4994393. The reversal of 4994388 is 8834994.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×4994388² = 49887822989088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4994387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9658 + ... + 10161.

Almost surely, 2^4994388 is an apocalyptic number.

It is an amenable number.

4994388 is an abundant number, since it is smaller than the sum of its proper divisors (9434572).

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

4994388 is a wasteful number, since it uses less digits than its factorization.

4994388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19836 (or 19831 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 4994388 is about 2234.8127438334. The cubic root of 4994388 is about 170.9335948171.

Subtracting 4994388 from its reverse (8834994), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 4994388 in words is "four million, nine hundred ninety-four thousand, three hundred eighty-eight".