351863444 has 6 divisors (see below), whose sum is σ = 615761034. Its totient is φ = 175931720.

The previous prime is 351863443. The next prime is 351863459. The reversal of 351863444 is 444368153.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 336355600 + 15507844 = 18340^2 + 3938^2 .

It is a super-2 number, since 2×351863444² = 247615766447082272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 351863398 and 351863407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351863443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43982927 + ... + 43982934.

It is an arithmetic number, because the mean of its divisors is an integer number (102626839).

Almost surely, 2^351863444 is an apocalyptic number.

It is an amenable number.

351863444 is a deficient number, since it is larger than the sum of its proper divisors (263897590).

351863444 is a wasteful number, since it uses less digits than its factorization.

351863444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87965865 (or 87965863 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 351863444 is about 18758.0234566438. The cubic root of 351863444 is about 705.9783502845.

The spelling of 351863444 in words is "three hundred fifty-one million, eight hundred sixty-three thousand, four hundred forty-four".