199378707 has 16 divisors (see below), whose sum is σ = 290552832. Its totient is φ = 120607520.

The previous prime is 199378691. The next prime is 199378709. The reversal of 199378707 is 707873991.

It is a happy number.

199378707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199378707 - 2⁴ = 199378691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199378707.

It is not an unprimeable number, because it can be changed into a prime (199378709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12958 + ... + 23804.

It is an arithmetic number, because the mean of its divisors is an integer number (18159552).

Almost surely, 2^199378707 is an apocalyptic number.

199378707 is a deficient number, since it is larger than the sum of its proper divisors (91174125).

199378707 is a wasteful number, since it uses less digits than its factorization.

199378707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11418.

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 199378707 is about 14120.1525133406. The cubic root of 199378707 is about 584.1973622598.

The spelling of 199378707 in words is "one hundred ninety-nine million, three hundred seventy-eight thousand, seven hundred seven".