84407390919 has 12 divisors (see below), whose sum is σ = 121961814000. Its totient is φ = 56253119904.

The previous prime is 84407390869. The next prime is 84407390929. The reversal of 84407390919 is 91909370448.

It is not a de Polignac number, because 84407390919 - 2¹⁷ = 84407259847 is a prime.

It is a super-2 number, since 2×84407390919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84407390929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1510539 + ... + 1565420.

It is an arithmetic number, because the mean of its divisors is an integer number (10163484500).

Almost surely, 2^84407390919 is an apocalyptic number.

84407390919 is a deficient number, since it is larger than the sum of its proper divisors (37554423081).

84407390919 is a wasteful number, since it uses less digits than its factorization.

84407390919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079014 (or 3079011 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 84407390919 in words is "eighty-four billion, four hundred seven million, three hundred ninety thousand, nine hundred nineteen".