77972014 has 4 divisors (see below), whose sum is σ = 116958024. Its totient is φ = 38986006.

The previous prime is 77971939. The next prime is 77972023. The reversal of 77972014 is 41027977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41027977 = 43 ⋅954139.

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, 19493002 + ... + 19493005.

It is an arithmetic number, because the mean of its divisors is an integer number (29239506).

Almost surely, 2^77972014 is an apocalyptic number.

77972014 is a deficient number, since it is larger than the sum of its proper divisors (38986010).

77972014 is a wasteful number, since it uses less digits than its factorization.

77972014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38986009.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 77972014 is about 8830.1763289302. The cubic root of 77972014 is about 427.2147617896.

The spelling of 77972014 in words is "seventy-seven million, nine hundred seventy-two thousand, fourteen".