749187399 has 16 divisors (see below), whose sum is σ = 1063802592. Its totient is φ = 467355648.

The previous prime is 749187371. The next prime is 749187419. The reversal of 749187399 is 993781947.

It is not a de Polignac number, because 749187399 - 2¹¹ = 749185351 is a prime.

It is a super-2 number, since 2×749187399² = 1122563517640770402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749187319) 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, 33634 + ... + 51279.

It is an arithmetic number, because the mean of its divisors is an integer number (66487662).

Almost surely, 2^749187399 is an apocalyptic number.

749187399 is a deficient number, since it is larger than the sum of its proper divisors (314615193).

749187399 is a wasteful number, since it uses less digits than its factorization.

749187399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85106.

The product of its digits is 3429216, while the sum is 57.

The square root of 749187399 is about 27371.2878578996. The cubic root of 749187399 is about 908.2320458354.

The spelling of 749187399 in words is "seven hundred forty-nine million, one hundred eighty-seven thousand, three hundred ninety-nine".