498981438 has 32 divisors (see below), whose sum is σ = 1110496800. Its totient is φ = 166079808.

The previous prime is 498981407. The next prime is 498981449. The reversal of 498981438 is 834189894.

498981438 is a `hidden beast` number, since 498 + 9 + 8 + 143 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31770 + ... + 44802.

It is an arithmetic number, because the mean of its divisors is an integer number (34703025).

Almost surely, 2^498981438 is an apocalyptic number.

498981438 is an abundant number, since it is smaller than the sum of its proper divisors (611515362).

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

498981438 is a wasteful number, since it uses less digits than its factorization.

498981438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13753 (or 13747 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 498981438 is about 22337.8924252043. The cubic root of 498981438 is about 793.1612041329.

The spelling of 498981438 in words is "four hundred ninety-eight million, nine hundred eighty-one thousand, four hundred thirty-eight".