49699378 has 4 divisors (see below), whose sum is σ = 74549070. Its totient is φ = 24849688.

The previous prime is 49699289. The next prime is 49699387. The reversal of 49699378 is 87399694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87399694 = 2 ⋅43699847.

It can be written as a sum of positive squares in only one way, i.e., 44395569 + 5303809 = 6663^2 + 2303^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12424843 + ... + 12424846.

Almost surely, 2^49699378 is an apocalyptic number.

49699378 is a deficient number, since it is larger than the sum of its proper divisors (24849692).

49699378 is a wasteful number, since it uses less digits than its factorization.

49699378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24849691.

The product of its digits is 2939328, while the sum is 55.

The square root of 49699378 is about 7049.7785780831. The cubic root of 49699378 is about 367.6633312272.

The spelling of 49699378 in words is "forty-nine million, six hundred ninety-nine thousand, three hundred seventy-eight".