399552149146 has 4 divisors (see below), whose sum is σ = 599328223722. Its totient is φ = 199776074572.

The previous prime is 399552149119. The next prime is 399552149153. The reversal of 399552149146 is 641941255993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 306533859025 + 93018290121 = 553655^2 + 304989^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99888037285 + ... + 99888037288.

Almost surely, 2^399552149146 is an apocalyptic number.

399552149146 is a deficient number, since it is larger than the sum of its proper divisors (199776074576).

399552149146 is a wasteful number, since it uses less digits than its factorization.

399552149146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199776074575.

The product of its digits is 10497600, while the sum is 58.

The spelling of 399552149146 in words is "three hundred ninety-nine billion, five hundred fifty-two million, one hundred forty-nine thousand, one hundred forty-six".