77400854 has 4 divisors (see below), whose sum is σ = 116101284. Its totient is φ = 38700426.

The previous prime is 77400839. The next prime is 77400877. The reversal of 77400854 is 45800477.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45800477 = 317 ⋅144481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19350212 + ... + 19350215.

It is an arithmetic number, because the mean of its divisors is an integer number (29025321).

Almost surely, 2^77400854 is an apocalyptic number.

77400854 is a deficient number, since it is larger than the sum of its proper divisors (38700430).

77400854 is a wasteful number, since it uses less digits than its factorization.

77400854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38700429.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 77400854 is about 8797.7755142991. The cubic root of 77400854 is about 426.1690608637.

The spelling of 77400854 in words is "seventy-seven million, four hundred thousand, eight hundred fifty-four".