117440637 has 4 divisors (see below), whose sum is σ = 156587520. Its totient is φ = 78293756.

The previous prime is 117440623. The next prime is 117440651. The reversal of 117440637 is 736044711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 736044711 = 3 ⋅245348237.

It is an interprime number because it is at equal distance from previous prime (117440623) and next prime (117440651).

It is a cyclic number.

It is not a de Polignac number, because 117440637 - 2⁷ = 117440509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117440598 and 117440607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117440237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19573437 + ... + 19573442.

It is an arithmetic number, because the mean of its divisors is an integer number (39146880).

Almost surely, 2^117440637 is an apocalyptic number.

It is an amenable number.

117440637 is a deficient number, since it is larger than the sum of its proper divisors (39146883).

117440637 is an equidigital number, since it uses as much as digits as its factorization.

117440637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39146882.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 117440637 is about 10837.0031373992. The cubic root of 117440637 is about 489.7105565338.

The spelling of 117440637 in words is "one hundred seventeen million, four hundred forty thousand, six hundred thirty-seven".