77421098 has 16 divisors (see below), whose sum is σ = 119776320. Its totient is φ = 37514400.

The previous prime is 77421089. The next prime is 77421101. The reversal of 77421098 is 89012477.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3758 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (7486020).

Almost surely, 2^77421098 is an apocalyptic number.

77421098 is a deficient number, since it is larger than the sum of its proper divisors (42355222).

77421098 is a wasteful number, since it uses less digits than its factorization.

77421098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 77421098 is about 8798.9259571836. The cubic root of 77421098 is about 426.2062121094.

The spelling of 77421098 in words is "seventy-seven million, four hundred twenty-one thousand, ninety-eight".