123977394 has 48 divisors (see below), whose sum is σ = 284169600. Its totient is φ = 38955168.

The previous prime is 123977393. The next prime is 123977423. The reversal of 123977394 is 493779321.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (123977393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77527 + ... + 79109.

It is an arithmetic number, because the mean of its divisors is an integer number (5920200).

Almost surely, 2^123977394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123977394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142084800).

123977394 is an abundant number, since it is smaller than the sum of its proper divisors (160192206).

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

123977394 is a wasteful number, since it uses less digits than its factorization.

123977394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839 (or 1836 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 123977394 is about 11134.5136400294. The cubic root of 123977394 is about 498.6327902157.

It can be divided in two parts, 12397 and 7394, that added together give a palindrome (19791).

The spelling of 123977394 in words is "one hundred twenty-three million, nine hundred seventy-seven thousand, three hundred ninety-four".