5405039820 has 192 divisors, whose sum is σ = 17886489600. Its totient is φ = 1351157760.

The previous prime is 5405039819. The next prime is 5405039821. The reversal of 5405039820 is 289305045.

5405039820 is a `hidden beast` number, since 5 + 40 + 503 + 98 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (5405039819) and next prime (5405039821).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5405039821) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 992505 + ... + 997935.

It is an arithmetic number, because the mean of its divisors is an integer number (93158800).

Almost surely, 2^5405039820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5405039820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8943244800).

5405039820 is an abundant number, since it is smaller than the sum of its proper divisors (12481449780).

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

5405039820 is a wasteful number, since it uses less digits than its factorization.

5405039820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565 (or 5557 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 5405039820 is about 73518.9759177860. The cubic root of 5405039820 is about 1754.9562703692.

The spelling of 5405039820 in words is "five billion, four hundred five million, thirty-nine thousand, eight hundred twenty".