117779453 has 4 divisors (see below), whose sum is σ = 128486688. Its totient is φ = 107072220.

The previous prime is 117779449. The next prime is 117779477. The reversal of 117779453 is 354977711.

It is a happy number.

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: 354977711 = 11 ⋅32270701.

It is a cyclic number.

It is not a de Polignac number, because 117779453 - 2² = 117779449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117779483) 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, 5353601 + ... + 5353622.

It is an arithmetic number, because the mean of its divisors is an integer number (32121672).

Almost surely, 2^117779453 is an apocalyptic number.

It is an amenable number.

117779453 is a deficient number, since it is larger than the sum of its proper divisors (10707235).

117779453 is a wasteful number, since it uses less digits than its factorization.

117779453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10707234.

The product of its digits is 185220, while the sum is 44.

The square root of 117779453 is about 10852.6242448543. The cubic root of 117779453 is about 490.1810423613.

The spelling of 117779453 in words is "one hundred seventeen million, seven hundred seventy-nine thousand, four hundred fifty-three".