743898431 has 16 divisors (see below), whose sum is σ = 812254560. Its totient is φ = 678844800.

The previous prime is 743898377. The next prime is 743898439. The reversal of 743898431 is 134898347.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-743898431 is a prime.

It is a super-2 number, since 2×743898431² = 1106769751288523522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743898439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65765 + ... + 76241.

It is an arithmetic number, because the mean of its divisors is an integer number (50765910).

Almost surely, 2^743898431 is an apocalyptic number.

743898431 is a deficient number, since it is larger than the sum of its proper divisors (68356129).

743898431 is a wasteful number, since it uses less digits than its factorization.

743898431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10634.

The product of its digits is 580608, while the sum is 47.

The square root of 743898431 is about 27274.5014803204. The cubic root of 743898431 is about 906.0897431030.

The spelling of 743898431 in words is "seven hundred forty-three million, eight hundred ninety-eight thousand, four hundred thirty-one".