4921438 has 4 divisors (see below), whose sum is σ = 7382160. Its totient is φ = 2460718.

The previous prime is 4921429. The next prime is 4921447. The reversal of 4921438 is 8341294.

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

It is an interprime number because it is at equal distance from previous prime (4921429) and next prime (4921447).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1230358 + ... + 1230361.

It is an arithmetic number, because the mean of its divisors is an integer number (1845540).

Almost surely, 2^4921438 is an apocalyptic number.

4921438 is a deficient number, since it is larger than the sum of its proper divisors (2460722).

4921438 is a wasteful number, since it uses less digits than its factorization.

4921438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460721.

The product of its digits is 6912, while the sum is 31.

The square root of 4921438 is about 2218.4314278336. The cubic root of 4921438 is about 170.0972684417.

The spelling of 4921438 in words is "four million, nine hundred twenty-one thousand, four hundred thirty-eight".