88440407 has 4 divisors (see below), whose sum is σ = 96480456. Its totient is φ = 80400360.

The previous prime is 88440389. The next prime is 88440413. The reversal of 88440407 is 70404488.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88440407 - 2⁸ = 88440151 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 (88440437) 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, 4020008 + ... + 4020029.

It is an arithmetic number, because the mean of its divisors is an integer number (24120114).

Almost surely, 2^88440407 is an apocalyptic number.

88440407 is a deficient number, since it is larger than the sum of its proper divisors (8040049).

88440407 is a wasteful number, since it uses less digits than its factorization.

88440407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040048.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 88440407 is about 9404.2759955246. The cubic root of 88440407 is about 445.5367961368.

The spelling of 88440407 in words is "eighty-eight million, four hundred forty thousand, four hundred seven".