748392391 has 4 divisors (see below), whose sum is σ = 753348784. Its totient is φ = 743436000.

The previous prime is 748392373. The next prime is 748392409. The reversal of 748392391 is 193293847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193293847 = 157 ⋅1231171.

It is an interprime number because it is at equal distance from previous prime (748392373) and next prime (748392409).

It is a cyclic number.

It is not a de Polignac number, because 748392391 - 2⁹ = 748391879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748392301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2477970 + ... + 2478271.

It is an arithmetic number, because the mean of its divisors is an integer number (188337196).

Almost surely, 2^748392391 is an apocalyptic number.

748392391 is a deficient number, since it is larger than the sum of its proper divisors (4956393).

748392391 is a wasteful number, since it uses less digits than its factorization.

748392391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4956392.

The product of its digits is 326592, while the sum is 46.

The square root of 748392391 is about 27356.7613397493. The cubic root of 748392391 is about 907.9106721719.

The spelling of 748392391 in words is "seven hundred forty-eight million, three hundred ninety-two thousand, three hundred ninety-one".