123779494 has 4 divisors (see below), whose sum is σ = 185669244. Its totient is φ = 61889746.

The previous prime is 123779489. The next prime is 123779501. The reversal of 123779494 is 494977321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494977321 = 17 ⋅29116313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30944872 + ... + 30944875.

It is an arithmetic number, because the mean of its divisors is an integer number (46417311).

Almost surely, 2^123779494 is an apocalyptic number.

123779494 is a deficient number, since it is larger than the sum of its proper divisors (61889750).

123779494 is an equidigital number, since it uses as much as digits as its factorization.

123779494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61889749.

The product of its digits is 381024, while the sum is 46.

The square root of 123779494 is about 11125.6233083814. The cubic root of 123779494 is about 498.3673332681.

The spelling of 123779494 in words is "one hundred twenty-three million, seven hundred seventy-nine thousand, four hundred ninety-four".