749891454 has 64 divisors (see below), whose sum is σ = 1769221440. Its totient is φ = 209664000.

The previous prime is 749891453. The next prime is 749891477. The reversal of 749891454 is 454198947.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 749891397 and 749891406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749891453) 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 in 31 ways as a sum of consecutive naturals, for example, 28704 + ... + 48204.

It is an arithmetic number, because the mean of its divisors is an integer number (27644085).

Almost surely, 2^749891454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749891454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884610720).

749891454 is an abundant number, since it is smaller than the sum of its proper divisors (1019329986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749891454 is a wasteful number, since it uses less digits than its factorization.

749891454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19565.

The product of its digits is 1451520, while the sum is 51.

The square root of 749891454 is about 27384.1460337912. The cubic root of 749891454 is about 908.5164629298.

The spelling of 749891454 in words is "seven hundred forty-nine million, eight hundred ninety-one thousand, four hundred fifty-four".