39220899840 has 728 divisors, whose sum is σ = 146968557408. Its totient is φ = 10032906240.

The previous prime is 39220899829. The next prime is 39220899947. The reversal of 39220899840 is 4899802293.

It is a happy number.

39220899840 is a `hidden beast` number, since 392 + 208 + 9 + 9 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 552407005 + ... + 552407075.

Almost surely, 2^39220899840 is an apocalyptic number.

39220899840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39220899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73484278704).

39220899840 is an abundant number, since it is smaller than the sum of its proper divisors (107747657568).

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

39220899840 is an frugal number, since it uses more digits than its factorization.

39220899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 39220899840 in words is "thirty-nine billion, two hundred twenty million, eight hundred ninety-nine thousand, eight hundred forty".