199402970 has 32 divisors (see below), whose sum is σ = 387183888. Its totient is φ = 73502208.

The previous prime is 199402933. The next prime is 199402981. The reversal of 199402970 is 79204991.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 790321 + 198612649 = 889^2 + 14093^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120992 + ... + 122628.

Almost surely, 2^199402970 is an apocalyptic number.

199402970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199402970 is a deficient number, since it is larger than the sum of its proper divisors (187780918).

199402970 is a wasteful number, since it uses less digits than its factorization.

199402970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 199402970 is about 14121.0116493118. The cubic root of 199402970 is about 584.2210588820.

The spelling of 199402970 in words is "one hundred ninety-nine million, four hundred two thousand, nine hundred seventy".