88190397 has 16 divisors (see below), whose sum is σ = 131042880. Its totient is φ = 58617936.

The previous prime is 88190393. The next prime is 88190413. The reversal of 88190397 is 79309188.

It is not a de Polignac number, because 88190397 - 2² = 88190393 is a prime.

It is a super-2 number, since 2×88190397² = 15555092246035218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88190393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4663 + ... + 14075.

It is an arithmetic number, because the mean of its divisors is an integer number (8190180).

Almost surely, 2^88190397 is an apocalyptic number.

It is an amenable number.

88190397 is a deficient number, since it is larger than the sum of its proper divisors (42852483).

88190397 is a wasteful number, since it uses less digits than its factorization.

88190397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9769 (or 9763 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 88190397 is about 9390.9742306110. The cubic root of 88190397 is about 445.1165742648.

The spelling of 88190397 in words is "eighty-eight million, one hundred ninety thousand, three hundred ninety-seven".