88390381 has 4 divisors (see below), whose sum is σ = 88441632. Its totient is φ = 88339132.

The previous prime is 88390369. The next prime is 88390391. The reversal of 88390381 is 18309388.

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 88390381 - 2¹⁵ = 88357613 is a prime.

It is a super-2 number, since 2×88390381² = 15625718906650322, 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 (88390391) 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, 22945 + ... + 26518.

It is an arithmetic number, because the mean of its divisors is an integer number (22110408).

Almost surely, 2^88390381 is an apocalyptic number.

It is an amenable number.

88390381 is a deficient number, since it is larger than the sum of its proper divisors (51251).

88390381 is a wasteful number, since it uses less digits than its factorization.

88390381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51250.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 88390381 is about 9401.6158717531. The cubic root of 88390381 is about 445.4527748608.

The spelling of 88390381 in words is "eighty-eight million, three hundred ninety thousand, three hundred eighty-one".