89400402 has 192 divisors, whose sum is σ = 261999360. Its totient is φ = 22353408.

The previous prime is 89400401. The next prime is 89400407. The reversal of 89400402 is 20400498.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (89400401) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 791098 + ... + 791210.

It is an arithmetic number, because the mean of its divisors is an integer number (1364580).

Almost surely, 2^89400402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89400402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130999680).

89400402 is an abundant number, since it is smaller than the sum of its proper divisors (172598958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89400402 is a wasteful number, since it uses less digits than its factorization.

89400402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 89400402 is about 9455.1785810740. The cubic root of 89400402 is about 447.1430558742.

The spelling of 89400402 in words is "eighty-nine million, four hundred thousand, four hundred two".