19949402 has 16 divisors (see below), whose sum is σ = 32817312. Its totient is φ = 9019920.

The previous prime is 19949393. The next prime is 19949429. The reversal of 19949402 is 20494991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2033 + ... + 6635.

It is an arithmetic number, because the mean of its divisors is an integer number (2051082).

Almost surely, 2^19949402 is an apocalyptic number.

19949402 is a deficient number, since it is larger than the sum of its proper divisors (12867910).

19949402 is a wasteful number, since it uses less digits than its factorization.

19949402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 19949402 is about 4466.4753441612. The cubic root of 19949402 is about 271.2126615130.

The spelling of 19949402 in words is "nineteen million, nine hundred forty-nine thousand, four hundred two".