749124390 has 32 divisors (see below), whose sum is σ = 2054741760. Its totient is φ = 171228384.

The previous prime is 749124379. The next prime is 749124391. The reversal of 749124390 is 93421947.

It is a super-2 number, since 2×749124390² = 1122374703385744200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749124391) 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, 1783420 + ... + 1783839.

It is an arithmetic number, because the mean of its divisors is an integer number (64210680).

Almost surely, 2^749124390 is an apocalyptic number.

749124390 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

749124390 is an abundant number, since it is smaller than the sum of its proper divisors (1305617370).

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

749124390 is a wasteful number, since it uses less digits than its factorization.

749124390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567276.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 749124390 is about 27370.1368283025. The cubic root of 749124390 is about 908.2065834044.

The spelling of 749124390 in words is "seven hundred forty-nine million, one hundred twenty-four thousand, three hundred ninety".