6401739962 has 4 divisors (see below), whose sum is σ = 9602609946. Its totient is φ = 3200869980.

The previous prime is 6401739961. The next prime is 6401739989. The reversal of 6401739962 is 2699371046.

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., 6339503641 + 62236321 = 79621^2 + 7889^2 .

It is a super-2 number, since 2×6401739962² = 81964549082135522888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6401739961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600434989 + ... + 1600434992.

Almost surely, 2^6401739962 is an apocalyptic number.

6401739962 is a deficient number, since it is larger than the sum of its proper divisors (3200869984).

6401739962 is a wasteful number, since it uses less digits than its factorization.

6401739962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200869983.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 6401739962 is about 80010.8740234726. The cubic root of 6401739962 is about 1856.8037721204.

The spelling of 6401739962 in words is "six billion, four hundred one million, seven hundred thirty-nine thousand, nine hundred sixty-two".