109902438 has 24 divisors (see below), whose sum is σ = 238894968. Its totient is φ = 36515232.

The previous prime is 109902437. The next prime is 109902439. The reversal of 109902438 is 834209901.

It is an interprime number because it is at equal distance from previous prime (109902437) and next prime (109902439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109902437) 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, 4120 + ... + 15387.

It is an arithmetic number, because the mean of its divisors is an integer number (9953957).

Almost surely, 2^109902438 is an apocalyptic number.

109902438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109902438 is an abundant number, since it is smaller than the sum of its proper divisors (128992530).

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

109902438 is a wasteful number, since it uses less digits than its factorization.

109902438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19828 (or 19825 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 109902438 is about 10483.4363640936. The cubic root of 109902438 is about 479.0002891083. Note that the first 3 decimals are identical.

The spelling of 109902438 in words is "one hundred nine million, nine hundred two thousand, four hundred thirty-eight".