749340978 has 8 divisors (see below), whose sum is σ = 1498681968. Its totient is φ = 249780324.

The previous prime is 749340971. The next prime is 749340979. The reversal of 749340978 is 879043947.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

749340978 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 749340978.

It is not an unprimeable number, because it can be changed into a prime (749340971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62445076 + ... + 62445087.

It is an arithmetic number, because the mean of its divisors is an integer number (187335246).

Almost surely, 2^749340978 is an apocalyptic number.

749340978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

749340978 is a wasteful number, since it uses less digits than its factorization.

749340978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124890168.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 749340978 is about 27374.0931904602. The cubic root of 749340978 is about 908.2941023335.

The spelling of 749340978 in words is "seven hundred forty-nine million, three hundred forty thousand, nine hundred seventy-eight".