48391397 has 4 divisors (see below), whose sum is σ = 48661920. Its totient is φ = 48120876.

The previous prime is 48391391. The next prime is 48391411. The reversal of 48391397 is 79319384.

It is a happy number.

48391397 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48391397 - 2⁴ = 48391381 is a prime.

It is a super-2 number, since 2×48391397² = 4683454607223218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48391391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134993 + ... + 135350.

It is an arithmetic number, because the mean of its divisors is an integer number (12165480).

Almost surely, 2^48391397 is an apocalyptic number.

It is an amenable number.

48391397 is a deficient number, since it is larger than the sum of its proper divisors (270523).

48391397 is a wasteful number, since it uses less digits than its factorization.

48391397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270522.

The product of its digits is 163296, while the sum is 44.

The square root of 48391397 is about 6956.3925277402. The cubic root of 48391397 is about 364.4092451635.

The spelling of 48391397 in words is "forty-eight million, three hundred ninety-one thousand, three hundred ninety-seven".