740398 has 4 divisors (see below), whose sum is σ = 1110600. Its totient is φ = 370198.

The previous prime is 740387. The next prime is 740423. The reversal of 740398 is 893047.

It is a happy number.

740398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893047 = 47 ⋅19001.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 185098 + ... + 185101.

It is an arithmetic number, because the mean of its divisors is an integer number (277650).

2⁷⁴⁰³⁹⁸ is an apocalyptic number.

740398 is a deficient number, since it is larger than the sum of its proper divisors (370202).

740398 is a wasteful number, since it uses less digits than its factorization.

740398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370201.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 740398 is about 860.4638284088. The cubic root of 740398 is about 90.4666299444.

It can be divided in two parts, 74039 and 8, that added together give a palindrome (74047).

The spelling of 740398 in words is "seven hundred forty thousand, three hundred ninety-eight".