149408399 has 8 divisors (see below), whose sum is σ = 174237600. Its totient is φ = 128064048.

The previous prime is 149408323. The next prime is 149408407. The reversal of 149408399 is 993804941.

It is not a de Polignac number, because 149408399 - 2¹² = 149404303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149408099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217454 + ... + 218139.

It is an arithmetic number, because the mean of its divisors is an integer number (21779700).

Almost surely, 2^149408399 is an apocalyptic number.

149408399 is a deficient number, since it is larger than the sum of its proper divisors (24829201).

149408399 is an frugal number, since it uses more digits than its factorization.

149408399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435614 (or 435600 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 149408399 is about 12223.2728432282. The cubic root of 149408399 is about 530.6298421684.

The spelling of 149408399 in words is "one hundred forty-nine million, four hundred eight thousand, three hundred ninety-nine".