4157438 has 4 divisors (see below), whose sum is σ = 6236160.
Its totient is φ = 2078718.
The previous prime is 4157437. The next prime is 4157449. The reversal of 4157438 is 8347514.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (4157437) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039358 + ... + 1039361.
It is an arithmetic number, because the mean of its divisors is an integer number (1559040).
Almost surely, 24157438 is an apocalyptic number.
4157438 is a deficient number, since it is larger than the sum of its proper divisors (2078722).
4157438 is a wasteful number, since it uses less digits than its factorization.
4157438 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2078721.
The product of its digits is 13440, while the sum is 32.
The square root of 4157438 is about 2038.9796467841.
The cubic root of 4157438 is about 160.7960072192.
The spelling of 4157438 in words is "four million, one hundred fifty-seven thousand, four hundred thirty-eight".