749997799946 has 4 divisors (see below), whose sum is σ = 1124996699922. Its totient is φ = 374998899972.

The previous prime is 749997799939. The next prime is 749997799981. The reversal of 749997799946 is 649997799947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649997799947 = 12049 ⋅53946203.

It can be written as a sum of positive squares in only one way, i.e., 706710916921 + 43286883025 = 840661^2 + 208055^2 .

It is a super-3 number, since 3×749997799946³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187499449985 + ... + 187499449988.

Almost surely, 2^749997799946 is an apocalyptic number.

749997799946 is a deficient number, since it is larger than the sum of its proper divisors (374998899976).

749997799946 is a wasteful number, since it uses less digits than its factorization.

749997799946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374998899975.

The product of its digits is 17499289248, while the sum is 89.

Subtracting from 749997799946 its reverse (649997799947), we obtain a palindrome (99999999999).

The spelling of 749997799946 in words is "seven hundred forty-nine billion, nine hundred ninety-seven million, seven hundred ninety-nine thousand, nine hundred forty-six".