77442004 has 12 divisors (see below), whose sum is σ = 143495604. Its totient is φ = 36443264.

The previous prime is 77441963. The next prime is 77442019. The reversal of 77442004 is 40024477.

It can be written as a sum of positive squares in 2 ways, for example, as 21641104 + 55800900 = 4652^2 + 7470^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569359 + ... + 569494.

It is an arithmetic number, because the mean of its divisors is an integer number (11957967).

Almost surely, 2^77442004 is an apocalyptic number.

It is an amenable number.

77442004 is a deficient number, since it is larger than the sum of its proper divisors (66053600).

77442004 is a wasteful number, since it uses less digits than its factorization.

77442004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138874 (or 1138872 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 77442004 is about 8800.1138628997. The cubic root of 77442004 is about 426.2445714430.

It can be divided in two parts, 774 and 42004, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 77442004 in words is "seventy-seven million, four hundred forty-two thousand, four".