103991437 has 8 divisors (see below), whose sum is σ = 115139232. Its totient is φ = 93126000.

The previous prime is 103991429. The next prime is 103991449. The reversal of 103991437 is 734199301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103991437 - 2³ = 103991429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103991396 and 103991405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103991467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69814 + ... + 71287.

It is an arithmetic number, because the mean of its divisors is an integer number (14392404).

Almost surely, 2^103991437 is an apocalyptic number.

It is an amenable number.

103991437 is a deficient number, since it is larger than the sum of its proper divisors (11147795).

103991437 is a wasteful number, since it uses less digits than its factorization.

103991437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141179.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 103991437 is about 10197.6191829270. The cubic root of 103991437 is about 470.2540304726.

The spelling of 103991437 in words is "one hundred three million, nine hundred ninety-one thousand, four hundred thirty-seven".