85408009240 has 32 divisors (see below), whose sum is σ = 192179216880. Its totient is φ = 34161213312.

The previous prime is 85408009223. The next prime is 85408009249. The reversal of 85408009240 is 4290080458.

It is a super-3 number, since 3×85408009240³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 85408009193 and 85408009202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85408009249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770602 + ... + 874438.

Almost surely, 2^85408009240 is an apocalyptic number.

It is an amenable number.

85408009240 is an abundant number, since it is smaller than the sum of its proper divisors (106771207640).

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

85408009240 is a wasteful number, since it uses less digits than its factorization.

85408009240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124411 (or 124407 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

Adding to 85408009240 its reverse (4290080458), we get a palindrome (89698089698).

The spelling of 85408009240 in words is "eighty-five billion, four hundred eight million, nine thousand, two hundred forty".