748391438 has 4 divisors (see below), whose sum is σ = 1122587160. Its totient is φ = 374195718.

The previous prime is 748391431. The next prime is 748391447. The reversal of 748391438 is 834193847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834193847 = 2467 ⋅338141.

It is a junction number, because it is equal to n+sod(n) for n = 748391392 and 748391401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748391431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187097858 + ... + 187097861.

It is an arithmetic number, because the mean of its divisors is an integer number (280646790).

Almost surely, 2^748391438 is an apocalyptic number.

748391438 is a deficient number, since it is larger than the sum of its proper divisors (374195722).

748391438 is a wasteful number, since it uses less digits than its factorization.

748391438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374195721.

The product of its digits is 580608, while the sum is 47.

The square root of 748391438 is about 27356.7439217462. The cubic root of 748391438 is about 907.9102867951.

The spelling of 748391438 in words is "seven hundred forty-eight million, three hundred ninety-one thousand, four hundred thirty-eight".